Question

Abcd is rotated counterclockwise about the origin.By how many degrees was abcd rotated?

Answer 1

The rotation is 270 degrees counterclockwise

Explanation:

Given

See attachment

Required

Degrees of rotation

From the question, the rotation is counterclockwise

Using point B and B' as points of reference.

`B =(2,5)`

`B' =(5,-2)`

The rule that supports the above is: rotation by 270 degrees counterclockwise.

Because the rule is:

`(x,y) ==>(y,-x)`