Geometry

Question Analysis:
This question combines multiple rotations to determine the net effect.

Key Concept Explanation:
90° CW = 270° CCW
Adding rotations: 270° CCW + 180° CCW = 450° CCW
450° CCW ≡ 90° CCW (since 450° − 360° = 90°).

Step-by-Step Solution:
First rotation: 90° CW = 270° CCW.
Second rotation: 180° CCW.
Total rotation: 270° + 180° = 450° CCW.
Simplify: 450° − 360° = 90° CCW.

Option Analysis:
A) Incorrect: Only considers the first rotation.
B) Correct: Net effect is 90° CCW.
C/D) Incorrect: Miscalculates total rotation.

Common Mistakes: