Question

~MEDAL + FAN~
Figure EFGH on the grid below represents a trapezoidal plate at its starting position on a rotating surface:
The plate is rotated 90° about the origin in the counterclockwise direction. In the image trapezoid, what are the coordinates of the endpoints of the side congruent to side EH?

A. (8, 4) and (5, 2)
B. (4, −8) and (2, −5)
C. (−8, −4) and (−5, −2)
D. (−8, −4) and (−5, −7)

Answer 1

@ganeshie8 @marihelenh @robtobey @LynFran

Answer 2

@Michele_Laino @Jhannybean

Answer 3

I think that, after your rotation, H goes in H'=(-5,-2) and E goes in G'=(-8,-4)
because the angle between OH and OH' has to be congruent to a right angle, similarly for the angle between OE and OE'

Answer 4

oops..E'=(-8,-4)

Answer 5

Thank you so much!