Question

What is the measure, in degrees, of angle ABC?

Answer 1

55°

Explanation:

We know that angle ACD and angle CAB are alternate interior angles, meaning that they have the same angle degrees; angle CAB also has a degree measure of 50°. Next, we know that the sum of all interior angles of a triangle is 180°, so angle ABC = 180° - BCA° - CAB°. This simplifies to ABC = 180° - 75° - 50° = 55°.