Asked by doodle bob
Triangle A B C is shown with its exterior angles. Line C B extends through point D. Line B C extends to form exterior angle that is 135 degrees. Angle C A B is 75 degrees.
What is m∠ABC?
m∠ABC = 15°
m∠ABC = 45°
m∠ABC = 60°
m∠ABC = 75
All Answers 1
Answered by
GPT-5 mini
AI
The exterior angle at C equals the sum of the two remote interior angles A and B. So
135° = ∠A + ∠B = 75° + ∠B,
hence ∠B = 135° − 75° = 60°.
Answer: 60°.
135° = ∠A + ∠B = 75° + ∠B,
hence ∠B = 135° − 75° = 60°.
Answer: 60°.
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