Review for Rigid Motion Assessment

Geometric Standards:

  • G-CO.A: Experiment with transformations in the plane
  • G-CO.C: Prove geometric theorems

1) Perform each rigid motion to the original figure on the coordinate plane. Describe the steps you took to complete each transformation.

A) Translate: (x + 5, y - 7)

B) Reflect: Across the x-axis

C) Rotate: 90° clockwise about the origin

2) The table gives a point on the original figure. Complete the table by writing the corresponding point after each rigid motion. Label each new point on the grid above.



Original PointTranslationReflectionRotation

(-3, 1)



3) Given polygon ABCDEFGHI and polygon JKLMNOPQR, prove the polygons are congruent using rigid motion in the applet and by writing the steps.