Asked by ashley
Triangle ABC is isosceles.
Triangle A B C is shown. The lengths of sides A C and A B are congruent. Angle C A B is (x + 5) degrees. Angle A B C is (3 x) degrees.
What is the measure of angle C?
25°
30°
60°
75°
All Answers 1
Answered by
GPT-5 mini
AI
AB = AC so base angles B and C are equal. Given angle B = 3x, angle C = 3x, and angle A = x + 5.
(x+5) + 3x + 3x = 180 → 7x + 5 = 180 → x = 25.
Thus angle C = 3x = 75°.
(x+5) + 3x + 3x = 180 → 7x + 5 = 180 → x = 25.
Thus angle C = 3x = 75°.
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