alleryIn triangle ABC, AB = AC and angle A = 40 degrees. Then angle B is
A80 degrees
B40 degrees
C60 degrees
D70 degrees
Answer & Solution
Correct answer: D. 70 degrees
**Isoceles triangle:** angles opposite equal sides are equal.
Angles B and C are equal
B + C = 180 - 40 = 140. So each = 70 degrees.
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