hunterthompson2 hunterthompson2

01-11-2018
Mathematics

contestada

ABC has vertices A (-2,0) B(9,-4) C (3,5). What are the vertices of the image after applying a 90 degree Counterclockwise Rotation about the origin. (2 points)

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jimrgrant1 jimrgrant1

01-11-2018

Under a counterclockwise rotation about the origin of 90°

a point (x, y ) → ( - y, x )

A(- 2, 0 ) → A'(0, - 2 )

B(9, - 4 ) → B'(4, 9 )

C(3, 5 ) → C'(- 5, 3 )

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