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Angle Measures of Rotated Figures

Explore how figures are affected by rotations and verify that their angle measures remain unchanged.

課題1

Putting It All Together

Answer these open ended questions on your own or with others to form deeper math connections.

課題2

How are the image and the pre-image different?

課題3

What stays the same after a rotation?

課題4

How can you use the triangles in the grid to show that an image has the same angle measurements as a pre-image?

課題5

Can you use the triangles in the grid in the same way to show that the angle measurements of the image and pre-image of a right triangle are the same? Why or why not?