Math, asked by smart19, 1 year ago

show that ABC is isosceles if A=70°and B=40°

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Answered by 123sona

Hope it will help you

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Answered by pragyaecep30oyx

sum of all sides is 180
angle A + angle B + angle C = 180
70+ 40+ angle C = 180
110 +angle C = 180
angle C =180-110
angle C =70
we know that in isosceles triangles two sides are equal angle A = angle C = 70
hence proved

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