Question

For Exercises 2 and 3, give the coordinates of each image. 2. r (90°, 0) (MN) for M(3, -5), N(2, 4) 3. (180°, 0) (AABC) for A(1, 1), B(3,5), C(5, 2)

Answer 1

2.

This is a 90 degree anticlockwise rotation.

If a point X(x,y) is rotated 90 degree anticlockwise with respect to the origin, the new point X' would be X'(-y,x).

M' would be M'(5,3)

N' would be N'(-4,2)

3.

This is 180 degree rotation with respect to the origin.

If a point A(x,y) is rotated 180 degrees with respect to the origin, the new point A' would be A'(-x,-y).

A' would be (-1,-1).

B' would be (-3,-5).

C' would be (-5,-2).