Finding measures using rigid transformations (Full video)

Khan Academy
Supporting grades: 8

Description: Rigid transformations preserve angles and distance. See how this behavior is used to find missing measures when given a triangle and the result of reflecting that triangle. And I encourage you to pause this video and see if you can figure out the answers to these questions on your own before I work through them. But it's really just saying that it's a transformation where the length between corresponding points don't change. If we're talking about a shape like a triangle, the angle measures won't change, the perimeter won't change, and the area won't change.

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