Drawing Shapes on a Coordinate Grid

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Trevor Hudson
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1 UNIT STUDENT OOK LESSO N Drawing Shapes on a oordinate Grid Quick Review t t Home Sc h o o l To describe the position of a shape on a grid, we use ordered pairs. The numbers in an ordered pair are called coordinates. The first coordinate tells how far you move right. The second coordinate tells how far you move up. The point has coordinates (, ). We write: (, ) Up D Right Try These. Match each ordered pair with a letter on the grid. a) (, ) b) (, ) c) (, ) d) (, ) e) (, ). a) Plot each point on the grid. (, ) (, ) (, ) D (, ) E (, ) b) Join the points in order. Then join E to. What figure have you drawn? E D

2 Practice Play this game with a partner. You will need a number cube. Take turns: Roll the number cube twice. Use the numbers rolled as an ordered pair. Plot the point on your grid. If you roll an ordered pair which has already been plotted, you miss your turn. The first player to plot points that form a rectangle is the winner. Player Player Stretch Your Thinking Write the coordinates of each point on your game grid. Write the coordinates of each point on your partner s grid.

3 UNIT STUDENT OOK LESSO N Transformations on a oordinate Grid Quick Review t t Home Sc h o o l We can show transformations on a coordinate grid. Translation Reflection Rotation F E G D F E D G K L J M J M K L P Q P R Q Quadrilateral DEFG was Quadrilateral JKLM was Triangle PQR was translated squares reflected in a horizontal rotated right and squares up. line through the counterclockwise vertical axis at. about vertex R. Try These. a) Identify this transformation. b) Write the coordinates of the vertices of the quadrilateral and its image. K J M L K J M L

4 Practice. Describe as many different transformations as you can that would move Rectangle EFGH onto the image. E H G F Image. a) Draw the image of Kite JKLM after a turn clockwise about vertex L. Label the vertices of the image. b) Write the coordinates of each vertex. c) Write the coordinates of the vertices of the image. M J L K Stretch Your Thinking Draw a shape for which a translation image could also be a reflection image. Draw the image. Write the coordinates of the shape and the image.

5 UNIT STUDENT OOK LESSO N Successive Transformations Quick Review t t Home Sc h o o l The same transformation can be applied to a shape more than once. When a shape is transformed or more times, we say the shape undergoes successive transformations. Quadrilateral D is the image of Quadrilateral D after successive translations. D D D The same is true for rotations and reflections. Try These. Make successive translations of squares right and square up. F E. Rotate Trapezoid PQRS about vertex Q. Then rotate the image about vertex S. Draw and label each image. P Q S R

6 Practice. Translate the quadrilateral squares right and squares down. Then translate the image square left and squares down. Draw and label each image. R Q T S. Reflect the quadrilateral in a line through D. Then reflect the image in a line though D. Then reflect the second image in a line through D. D Stretch Your Thinking Describe successive transformations that move Trapezoid D to its image, D. D D

7 UNIT STUDENT OOK LESSO N ombining Transformations Quick Review t t Home Sc h o o l combination of or different types of transformations can be applied to a shape. To identify the transformations, we can work backward. an you find a pair of transformations that move Trapezoid DEFG to its final image? D E G F E G D. D E FG is a reflection in a vertical line through on the horizontal axis.. D E FG is a rotation of clockwise about vertex F. D E E D G G F E G D Try These. Describe a pair of transformations that move LMN to its image. L N M Image

8 Practice. a) Translate QRS squares right and squares down. Then reflect the translation image in a vertical line through on the horizontal axis. b) List the coordinates of the final image. S Q R. a) Draw a pentagon whose vertices have these coordinates: (, ) (, ) (, ) D(, ) E(, ) b) Rotate the pentagon about D. Then translate the rotation image squares left. c) List the coordinates of the final image. Stretch Your Thinking pply transformations to the triangle to make a design. Explain how you did it.

9 UNIT STUDENT OOK reating Designs LESSO N Quick Review t t Home Sc h o o l We can use transformations of one or more shapes to create a design. Start with Hexagon. Translate the hexagon square right and squares down to get Image. Translate Image squares left to get Image. Translate Image square left and squares down to get Image D. Translate Image D squares right to get Image E. Translate Image E squares right to get Image F. D E F Try These. Transform this triangle to create a design. Describe the transformations you used.

10 Practice. Describe a set of transformations that could be used to create each design. a) b) K L J I G H D F E Stretch Your Thinking Draw shapes on the grid. Use a different colour for each shape. Transform copies of the shapes to create a design. Describe the transformations you used.

Shape & Space Part C: Transformations

Name: Homeroom: Shape & Space Part C: Transformations Student Learning Expectations Outcomes: I can describe and analyze position and motion of objects and shapes by Checking for Understanding identifying