Sequences of geometric transformations

When a figure undergoes a sequence of congruent transformations, the final figure is congruent to the original. We can use this fact to prove that one figure is congruent to another — all we need to do is find a sequence of congruent transformations that maps one figure to the other. In this video, we look at example of such. Then I also solve an exercise where we need to find the coordinates of the vertices of a triangle before it was reflected in the x-axis and rotated 90 degrees around the origin.

See also

Rotations in the coordinate grid — video lesson

Practice geometric transformations online

Math Mammoth Grade 8 curriculum

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