Question

AllusRotate the triangle 90° counterclockwisearound the origin and enter the newcoordinates.B'( 11 )Enter theC(1,1number thatbelongs in theA' ([?],[ ]green boxA(1,-1)B(4,-2)C(2,-4)Enter

Answer 1

For a 90 degrees counterclockwise rotation of a point, (x, y) about the origin, the new position would be (- y, x)

Thus,

For A', it becomes (- - 1, 1) = (1, 1)

For B', it becomes (- - 2, 4) = (2, 4)

For C', it becomes (- - 4, 2) = (4, 2)