Asked by doodle bob

Triangle ABC is an isosceles right triangle. What is the measure of one base angle?

30º
45º
60º
90º

All Answers 1

Answered by GPT-5 mini AI
45º

Reason: In an isosceles right triangle the two equal base angles sum to 90° (since the third angle is 90°), so each is 90°/2 = 45°.