Degrees of Rotation

Does this image show a rotation? If so, what is the angle of rotation?

• 90° counterclockwise

• 180° counterclockwise

• 270° counterclockwise

• Not a rotation

Pentagon ABCDE has a center R. Where will point A end up after a rotation of 72° clockwise?

• Point B

• Point C

• Point D

• Point E

If you rotate Pentagon ABCDE 216° clockwise, where will point A end up?

• Point B

• Point C

• Point D

• Point E

Rotation Rules (clockwise):

90^o rotation: (x, y)→(y, -x)

What are the coordinates for A' after a 90^⁰ rotation clockwise?

• (1, 3)

• (3, 1)

• (3, -1)

• (1, -3)

Rotation Rules (clockwise):

180^o rotation: (x, y)→(-x, -y)

What are the coordinates of C' after a rotation of 180° clockwise?

• (-3, -1)

• (3,1)

• (1,3)

• (-1, -3)

What are the coordinates of B' after a 270° clockwise?

• (4, 4)

• (4, -4)

• (-3, 4)

• (-4, 4)

Does the image show a rotation? If so, what is the angle of rotation?

• 90° counterclockwise

• 180° counterclockwise

• 270° counterclockwise

• Not a rotation

Determine the degrees of rotation from each petal.

• 20°

• 72°

• 45°

• 60°

What is the degree of rotations between each blade in the picture?

• 45°

• 90°

• 60°

• 30°

How many degrees of rotation are there from petal to petal for this flower?

• 60°

• 45°

• 90°

• 75°