Ohio s Learning Standards-Extended. Mathematics. Congruence Standards Complexity a Complexity b Complexity c

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1 Ohio s Learning Standards-Extended Mathematics Congruence Standards Complexity a Complexity b Complexity c Most Complex Least Complex Experiment with transformations in the plane G.CO.1 Know precise definitions of ray, angle, circle, perpendicular line, parallel line, and line segment, based on the undefined notions of point, line, distance along a line, and arc length. Identify points, lines, line segments, angles (right, acute, obtuse, and order by size), and perpendicular and parallel lines. Identify points, lines, line segments and angles (right, acute, obtuse, and order by size). Identify points, lines and line segments, and order angles by size. G.CO.2 Represent transformations in the plane using, e.g., transparencies and geometry software; describe transformations as functions that take points in the plane as inputs and give other points as outputs. Compare transformations that preserve distance and angle to those that do not, e.g., translation versus horizontal stretch. Demonstrate a rotation (turn), a reflection (flip) or a translation (slide) to make a shape congruent to another on a coordinate plane. Identify whether a rotation (turn), a reflection (flip) or a translation (slide) is required to make a shape congruent to another. Match shapes in different orientations. G.CO.3 Identify the symmetries of a figure, which are the rotations and reflections that carry it onto itself. a. Identify figures that have line symmetry; draw and use lines of symmetry to analyze properties of shapes. b. Identify figures that have rotational symmetry; determine the angle of rotation, and use rotational symmetry to analyze properties of shapes. Prove how two shapes have symmetry on a coordinate plane. Identify shapes that have symmetry on a coordinate plane or using concrete objects. Identify which shape is bigger, smaller, or same size as another. October

2 Congruence Standards Complexity a Complexity b Complexity c G.CO.4 Develop definitions of rotations, reflections, and translations in terms of angles, circles, perpendicular lines, parallel lines, and line segments. Identify a rotation (turn), a reflection (flip) or a translation (slide) to make a shape congruent to another on a coordinate plane. Identify a rotation (turn), a reflection (flip) or a translation (slide) of a shape, line, or angle. Match shapes that have a rotation, a reflection, or a translation. G.CO.5 Given a geometric figure and a rotation, reflection, or translation, draw the transformed figure using items such as graph paper, tracing paper, or geometry software. Specify a sequence of transformations that will carry a given figure onto another. Construct, draw or recognize a figure after its rotation, reflection or translation. Demonstrate a rotation (turn), a reflection (flip) or a translation (slide) to make a shape congruent to another. Match shapes in different orientations. Understand congruence in terms of rigid motions G.CO.6 Use geometric descriptions of rigid motions to transform figures and to predict the effect of a given rigid motion on a given figure; given two figures, use the definition of congruence in terms of rigid motions to decide if they are congruent Identify the rigid motion (a rotation (turn), a reflection (flip) or a translation (slide)) that is required to make a shape congruent to another on a coordinate plane. Demonstrate a rigid motion on the coordinate plane, whether a rotation (turn), a reflection (flip) or a translation (slide) is required to make a shape congruent to another. Match shapes that show rigid motions. October

3 Congruence Standards Complexity a Complexity b Complexity c G.CO.7 Use the definition of congruence in terms of rigid motions to show that two triangles are congruent if and only if corresponding pairs of sides and corresponding pairs of angles are congruent. Identify whether a rotation (turn), a reflection (flip) or a translation (slide) is required to make a triangle congruent to another triangle on a coordinate plane. Identify whether a rotation (turn), a reflection (flip) or a translation (slide) is required to make a triangle congruent to another Match triangles in different orientations. G.CO.8 Explain how the criteria for triangle congruence (ASA, SAS, and SSS) follow from the definition of congruence in terms of rigid motions. Identify whether a rotation (turn), a reflection (flip) or a translation (slide) is required to make a triangle congruent to another triangle on a coordinate plane. Identify the rigid motion required to make a triangle congruent (ASA, SAS, SSS) to another Match congruent triangles in different orientations. Prove geometric theorems both formally and informally using a variety of methods G.CO.9 Prove and apply theorems about lines and angles. Theorems include but are not restricted to the following: vertical angles are congruent; when a transversal crosses parallel lines, alternate interior angles are congruent and corresponding angles are congruent; points on a perpendicular bisector of a line segment are exactly those equidistant from the segment's endpoints. Identify points, lines, line segments, angles (right, acute, obtuse, and order by size), and perpendicular and parallel lines. Identify points, lines, line segments and angles (right, acute, obtuse, and order by size). Identify points, lines and line segments, and order angles by size. G.CO.10 Prove and apply theorems about triangles. Theorems include but are not restricted to the following: measures of interior angles of a triangle sum to 180 ; base angles of isosceles triangles are congruent; the segment joining midpoints of two sides of a triangle is parallel to the third side and half the length; the medians of a triangle meet at a point. Identify the measure of the interior angles of a Identify right, equilateral and isosceles triangles. Identify a October

4 Congruence Standards Complexity a Complexity b Complexity c G.CO.11 Prove and apply theorems about parallelograms. Theorems include but are not restricted to the following: opposite sides are congruent, opposite angles are congruent, the diagonals of a parallelogram bisect each other, and conversely, rectangles are parallelograms with congruent diagonals. Identify the measure of the interior angles of a parallelogram. Identify parallelograms. Identify a rectangle. Make geometric constructions G.CO.12 Make formal geometric constructions with a variety of tools and methods (compass and straightedge, string, reflective devices, paper folding, dynamic geometric software, etc.). Copying a segment; copying an angle; bisecting a segment; bisecting an angle; constructing perpendicular lines, including the perpendicular bisector of a line segment; and constructing a line parallel to a given line through a point not on the line. Make formal geometric constructions with a variety of tools and methods. Make parallel lines using geometric tools. Identify geometric tools (e.g., straightedge, protractor, and ruler). G.CO.13 Construct an equilateral triangle, a square, and a regular hexagon inscribed in a Construct a regular hexagon. Construct a square. Construct an equilateral Classify and analyze geometric figures G.CO.14 Classify two-dimensional figures in a hierarchy based on properties. Classify two-dimensional shapes based on their properties. Sort and match different types of quadrilaterals. Sort and match different types of triangles. October

5 High School-Statistics and Probability Similarity Right Triangles, and Trigonometry Standards Complexity a Complexity b Complexity c Most Complex Least Complex Use complex numbers in polynomial identities and equations G.SRT.1 Verify experimentally the properties of dilations given by a center and a scale factor: a. A dilation takes a line not passing through the center of the dilation to a parallel line and leaves a line passing through the center unchanged. b. The dilation of a line segment is longer or shorter in the ratio given by the scale factor. Determine the dimensions of a figure after dilation. Determine if a line is longer or shorter after dilation. Compare 2 lines to determine if a dilation has occurred. G.SRT.2 Given two figures, use the definition of similarity in terms of similarity transformations to decide if they are similar; explain using similarity transformations the meaning of similarity for triangles as the equality of all corresponding pairs of angles and the proportionality of all corresponding pairs of sides. Determine if figures are similar/describe or select why two figures are or are not similar. Determine if two rectangle or triangles are similar. Similar triangles. G.SRT.3 Use the properties of similarity transformations to establish the AA criterion for two triangles to be similar. Identify similar triangles in different orientations. Identify similar triangles. Identify a Prove and apply theorems both formally and informally involving similarity using a variety of methods G.SRT.4 Prove and apply theorems about triangles. Theorems include but are not restricted to the following: a line parallel to one side of a triangle divides the other two proportionally, and conversely; the Pythagorean Theorem proved using triangle similarity. Identify different types of triangles. Identify parts of a right Identify a right October

6 High School-Statistics and Probability Similarity Right Triangles, and Trigonometry Standards Complexity a Complexity b Complexity c G.SRT.5 Use congruence and similarity criteria for triangles to solve problems and to justify relationships in geometric figures that can be decomposed into triangles. Use definitions to demonstrate congruency and similarity in figures/ Use the reflections, rotations or translations in the coordinate plane to solve problems with right angles. Identify similar triangles. Identify a Define trigonometric ratios, and solve problems involving right triangles G.SRT.6 Understand that by similarity, side ratios in right triangles are properties of the angles in the triangle, leading to definitions of trigonometric ratios for acute angles. Identify parts of a right Identify right triangles. Identify a G.SRT.7 Explain and use the relationship between the sine and cosine of complementary angles. Identify parts of a right Identify right triangles. Identify an angle of a G.SRT.8 Solve problems involving right triangles. a. Use trigonometric ratios and the Pythagorean Theorem to solve right triangles in applied problems if one of the two acute angles and a side length is given. (G, M2) b. Use trigonometric ratios and the Pythagorean Theorem to solve right triangles in applied problems. (A2, M3) Construct a right triangle on a coordinate plane and label the parts. Identify the parts of a right triangle (right angle, legs, and hypotenuse). Given an assortment of triangles, identify right triangles. October

7 High School-Statistics and Probability Similarity Right Triangles, and Trigonometry Standards Complexity a Complexity b Complexity c Apply trigonometry to general triangles G.SRT.9 Derive the formula A = 1 /2 ab sin(c) for the area of a triangle by drawing an auxiliary line from a vertex perpendicular to the opposite side. Find the area of a Position or draw an auxiliary line from a vertex perpendicular to the opposite side. Identify different types of triangles. (+) G.SRT.10 Explain proofs of the Laws of Sines and Cosines and use the Laws to solve problems Find the perimeter of a Identify parts of a right Identify a right (+) G.SRT.11 Understand and apply the Law of Sines and the Law of Cosines to find unknown measurements in right and nonright triangles, e.g., surveying problems, resultant forces. Find the perimeter of a Identify parts of a right Identify a right October

8 Circle Standards Complexity a Complexity b Complexity c Most Complex Least Complex Understand and apply theorems about circles G.C.1 Prove that all circles are similar using transformational arguments. Identify the diameter of a Identify the radius of a Identify a G.C.2 Identify and describe relationships among angles, radii, chords, tangents, and arcs and use them to solve problems. Include the relationship between central, inscribed, and circumscribed angles and their intercepted arcs; inscribed angles on a diameter are right angles; the radius of a circle is perpendicular to the tangent where the radius intersects the Use the radius of a circle to determine the diameter and vice versa. Identify parts of a circle (radius, diameter, circumference, chord, and arc). Identify three-dimensional shapes with a circle as a cross-section and/or identify shapes or objects that have a circular base. G.C.3 Construct the inscribed and circumscribed circles of a triangle; prove and apply the property that opposite angles are supplementary for a quadrilateral inscribed in a Identify circumscribed circles of a Identify a circle inscribed in a Identify a G.C.4 Construct a tangent line from a point outside a given circle to the Identify a tangent line from a point outside a Identify the radius and diameter of a Identify a October

9 Circle Standards Complexity a Complexity b Complexity c Find arc lengths and areas of sectors of circles G.C.5 Find arc lengths and areas of sectors of circles. a. Apply similarity to relate the length of an arc intercepted by a central angle to the radius. Use the relationship to solve problems. b. Derive the formula for the area of a sector, and use it to solve problems. Identify the central angle of a or Apply the formula to the area of a sector (i.e. area of a slice of pie). Identify the sector of a Identify the arc of a G.C.6 Derive formulas that relate degrees and radians, and convert between the two. (A2, M3) Identify the central angle of a Identify the sector of a Identify the arc of a October

10 Expressing Geometric Properties with Equations Standards Complexity a Complexity b Complexity c Most Complex Least Complex Translate between the geometric description and the equation for a conic section G.GPE.1 Derive the equation of a circle of given center and radius using the Pythagorean Theorem; complete the square to find the center and radius of a circle given by an equation. Identify the diameter of a Identify the radius of a Identify a G.GPE.2 Derive the equation of a parabola given a focus and directrix. Identify the diameter of a Identify the radius of a Identify a G.GPE.3 Derive the equations of ellipses and hyperbolas given the foci, using the fact that the sum or difference of distances from the foci is constant. Identify the diameter of a Identify the radius of a Identify a Use coordinates to prove simple geometric theorems algebraically and to verify specific geometric statements G.GPE.4 Use coordinates to prove simple geometric theorems algebraically and to verify geometric relationships algebraically, including properties of special triangles, quadrilaterals, and circles. For example, determine if a figure defined by four given points in the coordinate plane is a rectangle; determine if a specific point lies on a given (G, M2) Find the perimeter of quadrilaterals drawn on a coordinate grid. Identify shapes on a coordinate grid. Identify special triangles, quadrilaterals and circles. G.GPE.5 Justify the slope criteria for parallel and perpendicular lines, and use them to solve geometric problems, e.g., find the equation of a line parallel or perpendicular to a given line that passes through a given point. Identify the slope of parallel and perpendicular lines. Identify if the slope of a parallel, or perpendicular, line increases, decreases, or stays the same. Identify parallel and perpendicular lines. October

11 Expressing Geometric Properties with Equations Standards Complexity a Complexity b Complexity c G.GPE.6 Find the point on a directed line segment between two given points that partitions the segment in a given ratio. Find the midpoint of a vertical or horizontal line on a coordinate grid. Find the length of a vertical or horizontal line on a coordinate grid. Identify points, lines and line segments. G.GPE.7 Use coordinates to compute perimeters of polygons and areas of triangles and rectangles, e.g., using the distance formula. Find the area and perimeter of shapes given on a coordinate grid. Find the perimeter of shapes given on a coordinate grid. Identify shapes on a coordinate grid. October

12 Geometric Measurement and Dimension Standards Complexity a Complexity b Complexity c Most Complex Least Complex Explain volume formulas, and use them to solve problems G.GMD.1 Give an informal argument for the formulas for the circumference of a circle, area of a circle, and volume of a cylinder, pyramid, and cone. Use dissection arguments, Cavalieri's principle, and informal limit arguments. Compare the volume of two objects with the same base but different heights and vice versa (e.g., Which cup can hold more water: the shorter or the taller cup; given the choice different sized cubes, identify which would hold more). Distinguish between objects that do and do not have volume. Sort three-dimensional objects (cones, cylinders, spheres). G.GMD.2 Give an informal argument using Cavalieri s principle for the formulas for the volume of a sphere and other solid figures. Compare the volume of two objects with the same base but different heights and vice versa (e.g., Which cup can hold more water: the shorter or the taller cup; given the choice different sized cubes, identify which would hold more). Distinguish between objects that do and do not have volume. Sort three-dimensional objects (cones, cylinders, spheres). October

13 Geometric Measurement and Dimension Standards Complexity a Complexity b Complexity c G.GMD.3 Use volume formulas for cylinders, pyramids, cones, and spheres to solve problems. Compare the volume of two objects with the same base but different heights and vice versa (e.g., Which cup can hold more water: the shorter or the taller cup; given the choice different sized cubes, identify which would hold more). Distinguish between objects that do and do not have volume. Sort three-dimensional objects (cones, cylinders, spheres, pyramids). Visualize relationships between two-dimensional and three- dimensional objects G.GMD.4 Identify the shapes of two-dimensional cross-sections of three-dimensional objects, and identify three-dimensional objects generated by rotations of two-dimensional objects. Identify cross-sections of three- dimensional shapes. Identify faces of threedimensional shapes. Identify two- and threedimensional shapes. Understand the relationships between lengths, area, and volumes G.GMD.5 Understand how and when changes to the measures of a figure (lengths or angles) result in similar and non-similar figures. Compare the volume of three- dimensional shapes. Compare the area of shapes. Compare similar shapes. G.GMD.6 When figures are similar, understand and apply the fact that when a figure is scaled by a factor of k, the effect on Find the volume of threedimensional shapes. Find the area of shapes. Identify similar shapes. lengths, areas, and volumes is that they are multiplied by k, k 2, and k 3, respectively. October

14 Modeling with Geometry Standards Complexity a Complexity b Complexity c Most Complex Least Complex Apply geometric concepts in modeling situations G.MG.1 Use geometric shapes, their measures, and their properties to describe objects, e.g., modeling a tree trunk or a human torso as a cylinder. Connect the shape of realworld objects to twodimensional and threedimensional shapes (e.g., the trunk of a tree is cylindrical in shape; a car is cube in shape; the flower of a sunflower is circular in shape; a bookshelf is rectangular prism in shape). Connect the shape of realworld objects to 2 dimensional shapes (e.g., a window is rectangular in shape, a wheel is circular in shape, and a table can be of many different shapes). Connect 2 dimensional shapes with real-world objects. G.MG.2 Apply concepts of density based on area and volume in modeling situations, e.g., persons per square mile, BTUs per cubic foot. Find the volume of realworld objects. Find the area of real-world objects. Identify shapes that model a real object (e.g. a baseball is a sphere, a can of soup is a cylinder). G.MG.3 Apply geometric methods to solve design problems, e.g., designing an object or structure to satisfy physical constraints or minimize cost; working with typographic grid systems based on ratios. Compare the volume of realworld objects. Compare the area of realworld objects. Sort shapes that model a real object (e.g. a baseball is a sphere, a can of soup is a cylinder). October