Question

Given the quadrilateral ABCD with vertices A(1, 1), B(2, 3), C(4, 3) and D(5, 1)

What are the coordinates of each point after quadrilateral ABCD is rotated 270° about the origin?

Answer 1

A (1,1) becomes (-1,1)

B (2,3) becomes (-3,2)

C( 4,3) becomes (-3,4)

D(5,1) becomes (-1,5)

Explanation:

By rotation around the origin at the given degree;

Given it is a clockwise rotation;

(x,y) becomes (-y,x)

A (1,1) becomes (-1,1)

B (2,3) becomes (-3,2)

C( 4,3) becomes (-3,4)

D(5,1) becomes (-1,5)