Honors Geometry Chapter 5 Tentative Syllabus (Updated 11/4/2015)
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1 Honors Geometry Chapter 5 Tentative Syllabus (Updated 11/4/2015) ll text book answers are posted on Mrs. Moreman s website YOU RE EXPECTED TO CHECK YOUR NSWERS BEFORE COMING TO CLSS. Red Day Red Date Blue Day Blue Date Topic Practice ssignments (due next class period) Mon Nov. 2 Tues Nov 3 lgebra Review #6 lgebra Review #6 Handouts Wed Nov 4 Thurs Nov 5 Fri Nov 6 Mon Nov 9 Tue Nov 10 Wed Nov Polygon Sum Conjecture 5.2 Exterior ngles of a Polygon 5.3 Kite and Trapezoid Properties 5.1 & 5.2 In-Class Handout 5.4 Properties of Midsegments 5.5 Properties of Parallelograms 5.6 Properties of Special Parallelograms 5.3 Wkbk p.34, # Wkbk p.35, #1-6, 7 (NO proof, just explain) 5.5 Wkbk p.36, # Wkbk p.37, # Proving Quadrilateral Properties 5.7 Proof Practice + Review Handout p.259, #3-9 p.263, #1-9, 14 p.271, #1-8,19 p.277, #1-7 Constructions are optional challenge questions. (p. 273 #14-16; p. 280 #18) p.283, #1-10, p.294, #1-13, 18, 26 Know LL properties! lgebra Review #7: p. 289 # 1-14, p. 294 #30-31, p. 302 #13-14( Due Nov. 20/23) Study for QUIZ Finish Practice Problems on Handout 5.1 Wkbk p.32, # Wkbk p.33, #1-8 QUIZ Thurs Nov 12 Fri Nov 13 Review Day QUIZ Study for QUIZ Start Review for test p.304, #1-17, 19 ( no construction), 25, 26, 27 Study for QUIZ Mon Nov 16 Tue Nov 17 MC 8 QUIZ Wed Nov 18 Thurs Nov 19 lgebra Review #8 (Handout) lgebra Review #7 Due Next Class Fri Nov 20 Mon Nov 23 Start Chapter 6 Turn in lgebra Review #7 Created by W.L. Bass and used with permission, p.1
2 Section Indiana Standard Learning Target 5.1 GQP3 Find measures of interior and exterior angles of polygons. Explain and justify the method used. Practice Standard 7: Look for & make use of structure. 5.2 GQP3 Practice Standard 7: Look for & make use of structure. 5.3 GQP2 Prove that given quadrilaterals are parallelograms, rhombuses, rectangles, squares or trapezoids. GTS6 pply geometric methods to solve design problems. Practice Standard 5: Use appropriate tools strategically. 5.4 GT1 Prove and apply theorems about triangles, including the following: the segment joining midpoints of two sides of a triangle is parallel to the third side and half the length. Practice Standard 7: Look for & make use of structure. 5.5 GQP1 Prove and apply theorems about parallelograms, including the following: opposite sides are congruent; opposite angles are congruent; the diagonals of a parallelogram bisect each other; and rectangles are parallelograms with congruent diagonals. GTS6 Practice Standard 2: Reason abstractly & quantitatively. lgebra Skills 5 GPL4 Find the equation of a line, passing through a given point, that is parallel or perpendicular to a given line. Practice Standard 2: Reason abstractly & quantitatively. 5.6 GQP1 GQP5 Deduce formulas relating lengths and sides, perimeters, and areas of regular polygons. Practice Standard 1: Make sense of problems & persevere in solving them. 5.7 GQP1 GLP4 Develop geometric proofs, including direct proofs, indirect proofs, proofs by contradiction and proofs involving coordinate geometry, using twocolumn, paragraphs, and flow charts formats. Practice Standard 3: Construct viable arguments & critique other s reasoning. -Discover and use the sum of the measures of the angles of a polygon. -Discover and use the sum of the measures of the exterior angles of a polygon. -Write formulas for the measure of an equiangular polygon s interior angle. -Discover and use properties of kites & trapezoids. (p.273 #17) Define, discover and use properties of midsegments in triangles & trapezoids. Discover and use properties of parallelograms. p ) -Review slope-intercept form of a linear equation. -Write linear equations. -Discover and use properties of rectangles, rhombuses & squares. -Write flowchart, two-column & paragraph proofs. Created by W.L. Bass and used with permission, p.2
3 Review Vocabulary Definition: Kite with pairs of sides. NEW Definition: Dart kite. Definition: Trapezoid with of sides. NEW Definition: Isosceles Trapezoid with legs. Definition: Parallelogram with pairs of sides. Definition: Rhombus n parallelogram. Definition: Rectangle n parallelogram. Definition: Regular Polygon polygon that is and. Definition: Square parallelogram Chapter 5 Conjectures POLYGONS 1. Quadrilateral Sum Conjecture (Section 5.1) The sum of the measures of the four interior angles of any quadrilateral is. 2. Pentagon Sum Conjecture (Section 5.1) The sum of the measures of the five interior angles of any pentagon is. 3. Polygon Sum Conjecture (Section 5.1) The sum of the measures of the n interior angles of a n-gon is. 4. Exterior ngle Sum Conjecture (Section 5.2) For any polygon, the sum of the measures of one exterior angle at each vertex is. 5. Equiangular Polygon Conjecture (Section 5.2) Find the measure of each interior angle of an equiangular n-gon by using one of these formulas: or. Created by W.L. Bass and used with permission, p.3
4 KITES 6. Kite ngles Conjecture (Section 5.3) The angles of a kite are. 7. Kite Diagonals Conjecture (Section 5.3) The diagonals of a kite are. 8. Kite Diagonal Bisector Conjecture (Section 5.3) The diagonal connecting the angles of a kite is the of the other diagonal. 9. Kite ngle Bisector Conjecture (Section 5.3) The angles of a kite are by the diagonal. TRPEZOIDS 10. Trapezoid Consecutive ngles Conjecture (Section 5.3) The angles between the bases of a trapezoid are. 11. Isosceles Trapezoid Conjecture (Section 5.3) Each pair of angles in an isosceles trapezoid are. 12. Isosceles Trapezoid Diagonals Conjecture (Section 5.3) The in an isosceles trapezoid are. MIDSEGMENTS 13. Three Midsegments Conjecture (Section 5.4) The midsegments of triangle divide the triangle into. 14. Triangle Midsegment Conjecture (Section 5.4) midsegment of a triangle is to the side. midsegment of a triangle is the length of the side. 15. Trapezoid Midsegment Conjecture (Section 5.4) midsegment of a trapezoid is to the. midsegment of a trapezoid is of the lengths of the. Created by W.L. Bass and used with permission, p.4
5 PRLLELOGRMS 16. Parallelogram Opposite ngles Conjecture (Section 5.5) The angles in a parallelogram are. 17. Parallelogram Consecutive ngles Conjecture (Section 5.5) The angles in a parallelogram are. 18. Parallelogram Opposite Sides Conjecture (Section 5.5) The sides in a parallelogram are. 19. Parallelogram Diagonals Conjecture (Section 5.5) The in a parallelogram. RHOMBI 20. Double-Edged Straightedge Conjecture (Section 5.6) If two parallel lines are intersected by a second pair of parallel lines that are the same distance apart, then the parallelogram formed is a. 21. Rhombus Diagonals Conjecture (Section 5.6) The diagonals of a rhombus are to each other. The diagonals of a rhombus each other. 22. Rhombus ngles Conjecture (Section 5.6) The of a rhombus the angles. RECTNGLES 23. Rectangle Diagonals Conjecture (Section 5.6) The diagonals of a rectangle are and each other. SQURES 24. Square Diagonals Conjecture (Section 5.6) The diagonals of a square are, and, and they each other. Created by W.L. Bass and used with permission, p.5
6 HONORS GEOMETRY Notes 5.1 Polygon Sum Investigation Choose ONE vertex in each polygon. Draw all the diagonals from that ONE vertex. Complete the table below. Find a rule to calculate the sum of the interior angles for NY convex polygon Polygon # of sides How many triangles were formed by the diagonals? Calculate the measure of interior angles (Use the triangles!) Triangle =180 Quadrilateral Pentagon Hexagon Do you see a pattern? What about an n-gon? Heptagon Octagon Nonagon Decagon Dodecagon Created by W.L. Bass and used with permission, p.6
7 5.2 Exterior ngles of a Polygon Step 1: SET of exterior angles is shown on the hexagon below. The picture has been drawn to scale. Find LL angle measures in the figure BOTH interior and exterior angles. Write the measures for the angles on the diagram. Step 2: What do you notice about the relationship between the interior and exterior angles? Step 3: Calculate the SUM of the measures of the exterior angles: Step 4: Watch the software construction for the exterior angle conjecture. What do you think the sum of the exterior angles in NY polygon is? Summary Sum of the INTerior angles = Sum of EXTerior angles = Take it another step IF the polygon is REGULR, what do you know about all the angles? SO Measure of ONE INTior angle (in a regular polygon) = Measure of ONE EXTeior angle (in a regular polygon) = Created by W.L. Bass and used with permission, p.7
8 HONORS GEOMETRY Notes Big ideas about KITES 1. From the definition 2 distinct pairs of consecutive congruent sides. Measure segments to confirm ST SR and T R ; but ST T and SR R 2. Diagonals are perpendicular Draw S and TR. Label the intersection W. Use your protractor to confirm SWT is a right angle 3. Diagonal connecting the vertex angles is a perpendicular bisector of the other diagonal. Measure segments to confirm TW RW but SW W 4. Non-vertex angles are congruent. Measure angles to confirm ST is congruent to SR 5. Vertex angles are bisected by the diagonal. Measure angles to confirm TS is congruent to RS Measure angles to confirm TS is congruent to RS Given: STR is a kite T Label all the kite properties on the given figure. S R PPLY THE KITE PROPERTIES: Solve for x in the KITES below.. B. (2x + 113) 11 (3x - 12) 116 (5x + 56) Created by W.L. Bass and used with permission, p.8
9 Big ideas about ISOSCELES TRPEZOIDS 1. From the definition EXCTLY 1 pair of parallel sides. If C SR, C and S are ; 2. From the definition: NON-parallel sides are congruent. Measure sides to confirm CS R but C SR 3. Both sets of base angles are congruent. Measure angles to confirm C is congruent to Measure angles to confirm S is congruent to R and 4. Diagonals are congruent. Draw in CR and S. Measure segments to confirm CR S. R are. Given: CRS is an isosceles trapezoid C Label all the isosceles trapezoid properties on the given figure. Note: Look at the NON-isosceles trapezoid at the right. re Properties #3 and #4 listed above true for any trapezoid? S R Big ideas about TRPEZOID MIDSEGMENTS! 1. The midsegment is parallel to each of the bases. Recall: If Corresponding ngles (C) are, then lines are parallel. 2. The length of the midsegment in a trapezoid is equal to one-half the sum of the bases. Measure CL RM. Divide the value by 2 Find E Compare the measurements R M Given: RMLC a trapezoid and E is a midsegment E C L Created by W.L. Bass and used with permission, p.9
10 Big ideas about TRINGLE MIDSEGMENTS 1. The midsegment is parallel to the third side. Recall: If Corresponding ngles (C) are, then lines are parallel. Compare Z to BER 2. The length of the midsegment in a triangle is equal to one-half the third side. Use the perpendicular bisector construction to find the midpoint of Z. Label the midpoint S. 1 ZS ER, therefore ER Z OR 2ER Z 2 3. The three midsegments divide the triangle into four congruent triangles. Draw in the remaining midsegments in the triangle. Compare the triangles formed. B Given: ER is a midsegment E R Z Label all the midsegement properties in the figure. pply the TRPEZOID and MIDSEGMENT properties. Solve for x in each situation. W E R. m1 15x 5 m2 90 4x N U Given: WRNF is a trapezoid is a midsegment 3 F B. m4 78 m2 x C. m1 2x 7 m3 117 D. EU 10 RN x FW 14 E. EU 60 RN 4x 1 FW 6x 11 F. EU 2x 1 RN 8 FW 3x 3 Created by W.L. Bass and used with permission, p.10
11 HONORS GEOMETRY Notes Make parallelograms and rhombi Rhombus Parallelogram Big ideas about PRLLELOGRMS! 1. From the definition Both pairs of opposite sides are parallel. 4. Consecutive angles are supplementary. Recall: If lines are parallel, then Consecutive Interior ngles (CI) are supplementary. E is supplementary to and is supplementary to and 2. Both pairs of opposite sides are congruent. Measure all sides to confirm LE T and L ET 3. Both pairs of opposite angles are congruent. Measure the angles to confirm E is congruent to. Measure the angles to confirm L is congruent to T. 5. Diagonals bisect each other. Draw in diagonals LT and E. Label the point of intersection P. Measure the segments formed to confirm LP PT and EP P L Given: LTE is a parallelogram Label all the parallelogram properties in the figure. E T Created by W.L. Bass and used with permission, p.11
12 PPLY THE PRLLELOGRM PROPERTIES! Find the missing measures in parallelogram STR. S T 8 95 P R 17. ST B. SP C. RT D. m RT E. m SR F. msrt Use the given information to solve for x in each scenario.. SOCK is a parallelogram mskc 12x 9 msoc 135 K S C O C. PNT is a parallelogram P 15x 18 TN 23x 14 T P N B. SHOE is a parallelogram msho 89 meoh 5x 24 E S O H D. COT is a parallelogram CP x 17 C C 5x 23 P O T Big ideas about RECTNGLES! 1. From the definition ll the parallelogram properties. 2. From the definition ll the angles are right angles. ( J, O, K, E are right angles) 3. Diagonals are congruent. Draw diagonals OE and KJ. Label the point of intersection P. Measure the segments to confirm OE KJ Given: JOKE is a rectangle O K J Label all the rectangle properties in the figure. Note: What kind of triangles are OPK, JPE, OPJ, KPE? What do you know about all the segments formed by the intersecting diagonals? E Created by W.L. Bass and used with permission, p.12
13 PPLY THE RECTNGLE PROPERTIES! nswer the following questions about rectangle RSTU R U 1. Which of the following are congruent in RSTU?. Consecutive sides B. 1 and 2 C. The diagonals D. ll of the above. B 2 1 S T 2. If m1 50, find m 2. 25º B. 40º C. 50º D. 100º 3. If SB 10x 15 and BU x 12, find RT.. 3 B. 15 C. 30 D If RU 3x 5, UT y 25, RS 10, and ST 4, solve for x and y. Big ideas about RHOMBI (plural of rhombus)! 1. From the definition ll the parallelogram properties. 2. From the definition ll four sides are congruent Measure the sides to confirm JU UN NK KJ 3. Diagonals are perpendicular. Measure the angles to confirm JRU is a right angle. 4. Diagonals bisect the opposite angles. Measure 1 and compare its measure to 2, 3, and 4. re they all equal in measure? Measure 5 and compare its measure to 6, 7, and 8. re they all equal in measure? Given: JUNK is a rhombus J 6 5 R 3 4 U Label all the rhombus properties in the figure K N Note: and BUT they are not always congruent to each other. When are they all congruent? Created by W.L. Bass and used with permission, p.13
14 PPLY THE RHOMBUS PROPERTIES! Use rhombus FISH to answer the following. IF FI 6x 2 and SI 8x 4, find FH. questions. F I H S B. If mfih 56, find the m IFH Big ideas about SQURES! 1. ll the properties 2. ll the properties 3. ll the properties LBEL EVERYTHING YOU KNOW BOUT THE SQURE! Y C Z O Created by W.L. Bass and used with permission, p.14
15 HONORS GEOMETRY 5.7 Notes Determine if the following questions are sometimes, always, or never true. 1. Diagonals of a trapezoid are perpendicular 5. Diagonals of a square are perpendicular. 2. djacent sides of a rectangle are congruent. 6. trapezoid is not a parallelogram. 3. Opposite angles of a trapezoid are congruent. 7. Both pairs of opposite angles of a parallelogram are congruent. 4. djacent angles of rhombus are supplementary ND congruent. 8. The diagonals of a parallelogram are congruent. How do you KNOW you have a parallelogram? (These are ways to PROVE a quadrilateral is a parallelogram.) a.) Show that pairs of opposite are congruent b.) Show that pairs of opposite are congruent c.) Show that pair of opposite is both and. OR Remember you can always prove that a quadrilateral is a parallelogram by using the definition. d.) Show that pairs of opposite. Created by W.L. Bass and used with permission, p.15
16 little practice Do you have a parallelogram? Directions: Determine if the given markings on the quadrilateral provide enough information to conclude that it is a parallelogram. Hint: You may (if necessary) add segments to help find congruent triangles. Given: C BD Given: C BD 90º 90º B C B C D D Created by W.L. Bass and used with permission, p.16
17 Polygons Quadrilaterals Parallelograms Rhombus Square Rectangle Kite Trapezoid Isos. Trap Created by W.L. Bass and used with permission, p.17
18 Put a check in the box if the property LWYS applies to the indicated shape Property Parall grm Rectangle Rhombus Square Trapezoid Isos. Trapezoid Is it a parallelogram? Kite both.pairs. opp. sides Both.pairs. opp. sides b.p. opp. angles Consec. s supp. Diag bisect e.o. Four right angles Diagonals Four sides Diagonals Diag bisect s Created by W.L. Bass and used with permission, p.18
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