Question

Figure EFGH on the grid below represents a trapezoidal plate at its starting position on a rotating surfaceThe 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?

(8, 4) and (5, 2)

(4, -8) and (2, -5)

(-8, -4) and (-5, -2)

(-8, -4) and (-5, -7)

Answer 1

need help pleas!

Answer 2

Multiply each (x,y) by rotation matrix [(0,-1),(1,0] to get the image