Question

In triangle ABC, what is the measure of angle A if angle B is 65°?

a) 25°
b) 45°
c) 65°
d) 115°

Answer 1

The measure of angle A in triangle ABC can be found by subtracting the measure of angle B from 180°.

Step-by-step explanation:

Since triangle ABC is a triangle, the sum of its angles must be 180°. Therefore, we can find the measure of angle A by subtracting the measure of angle B (which is given as 65°) from 180°.

180° - 65° = 115°

Therefore, the measure of angle A in triangle ABC is 115°, so the correct answer is d) 115°.