This diagram shows a pre-image △ABC , and its image, △A′′B′′C′′ , after a series of transformations.

Select from the drop-down menus to correctly complete the statements.

△ABC is (rotated 90 degrees counterclockwise about the origin)
to become △A′B′C′ . Then △A′B′C′ is (A. reflected across the x-axis) (B. reflected across the line y=x) (C. rotated 90 degrees counterclockwise about the origin)
to become △A′′B′′C′′ . Because the transformations are (A. both rigid) (B. both not rigid) the pre-image and image are (A. congruent) (B. not congruent)

Question

This diagram shows a pre-image △ABC , and its image, ​ △A′′B′′C′′ ​ , after a series of transformations.

Select from the drop-down menus to correctly complete the statements.

△ABC is (rotated 90 degrees counterclockwise about the origin)
to become △A′B′C′ . Then ​ △A′B′C′ ​ is (A. reflected across the x-axis) (B. reflected across the line y=x) (C. rotated 90 degrees counterclockwise about the origin)
to become ​ △A′′B′′C′′ ​ . Because the transformations are (A. both rigid) (B. both not rigid) the pre-image and image are (A. congruent) (B. not congruent)

CC12 · Answer

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