In ∆ABC ,if side AB = Side BC and measure of angle A=40°. Find measure of angles B
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60°is the correct answer
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Answer:
Side AB = BC
angle A = 40° = angle c
because in triangle if 2 sides are equal than 2 angle are also equal.
Sum of all 3 angle is 180°
angA + angB + angC = 180°
40° + angB + 40° = 180°
angB = 180° - 80°
angB = 100°
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