Question

How many degrees counterclockwise about the origin is △STU rotated to produce △S'T'U'?

Answer 1

180°

Explanation:

We Know

Each square represents 90°

We see the △STU rotate counterclockwise about the origin through 2 squares. So, the △STU rotated 180° counterclockwise to produce △S'T'U.

We can check by using the rule rotate about the origin 180° state that:

(x , y) → (-x , -y)

Pick point U (-2,1)

(-2,1) → (2, -1)

This meet the rule, so rotate 180° is the correct answer.