Question

in angle abc if AB = AC and B= 70 degree find angle A​

Answer 1

Answer:

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Answer 2

Answer:

B=70°

therefore C=70° (isosceles angle theorem)

therefore A+B+C=180°(sum of triangle is always 180°)

therefore A+70++70=180

A+140=180

A=180-140

A=40°

therefore, the measurement of angle A is 40°

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