image, preimage, rigid motion, rotation, transformation
TEKS 8(1)(D), 8(1)(F), 8(10)(A)
A rotation is a rigid motion that turns a figure about a fixed point called the center of rotation. The angle of rotation is the number of degrees the figure rotates. A positive angle of rotation turns the figure counterclockwise.
TEKS 8(1)(D), 8(10)(A)
Example Recognizing Rotations
Identify which transformation is a rotation.
The first transformation is a rotation about the origin.