Question

linear angles share a line together. name one angle linear to ∠a. ∠? enter the angle letter. both ∠b and ∠c share a line with ∠a. ∠d is vertical to ∠a.

Explanation:

Step1: Recall linear - angle definition

Linear angles share a line and their sum is 180 degrees.

Step2: Identify linear angles to ∠A

From the given information, ∠B and ∠C share a line with ∠A. So either ∠B or ∠C is linear to ∠A.

Answer:

B (or C)