Question

Rectangle ABCD is the image of rectangle ABCD after which of the following rotations?

• A. A ${90}^o$ clockwise rotation about the origin
• B. A ${180}^o$ rotation about the origin
• C. A ${90}^o$ counterclockwise rotation about the origin
• D. A ${90}^o$ counterclockwise rotation about the point (1, 1)

Answer 1

The correct option is C A ${90}^o$ counterclockwise rotation about the origin

By joining A and A to the origin O, it is clear that this is a ${90}^o$ counterclockwise rotation about the origin.
(Do the same for the other points and their images to see for yourself)