Interactive applet

Transformations

Translate, reflect, rotate, and dilate a triangle. Compare the pre-image and image coordinates.

Grade 8 State Test

Hands-on lab

-8-7-6-5-4-3-2-1012345678-8-7-6-5-4-3-2-112345678ABCA'B'C'

Move the triangle

Congruent or similar?

Rigid motion → congruent (size and shape preserved).

Missions

  • Translate so A′ is at (4, 3)
  • Dilate by 2

0/2 complete

Guided questions

Reflect over the y-axis. What happens to each x-coordinate?

Reflection

Which transformations preserve both size and shape? Which preserve only shape?

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