Question

A. 90 degrees
B. 180 degrees
C. 270 degrees
D. 360 degrees​

Answer 1

Answer:

What was the question (I can't see the picture)

Step-by-step explanation:

Answer 2

Answer:

B. 180 degrees

Step-by-step explanation:

∠A, ∠B and ∠C are collective the internal angles of a triangle.

By definition, the internal angles of a triangle sum to 180degrees

hence ∠A + ∠B + ∠C = 180 degrees

(see also attached graphic for reference)