Question

triangle abc is rotated 100° counterclockwise about point p to create △abc. what is m∠cab?
a. 60°
b. 50°
c. 100°
d. 70°

Explanation:

Step1: Recall rotation property

Rotations preserve angle measures.

Step2: Match corresponding angles

$\angle C'A'B'$ corresponds to $\angle CAB$ in the original triangle.

Step3: Identify $\angle CAB$ measure

From the diagram, $m\angle CAB = 70^\circ$.

Answer:

D. $70^\circ$