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dimulka [17.4K]
3 years ago
9

Please help. I have no idea how to do this. Find the measure of

Mathematics
1 answer:
vagabundo [1.1K]3 years ago
6 0

m∠A = 40

Step-by-step explanation:

Given AB =AC and  m∠B = 70

Since AB =AC , Triangle ABC is an isosceles Triangle and the corresponding angles B and C are equal.

So m∠B = m∠C = 70

The sum of the 3 Angles of a triangle is 180°.

=> m∠A  + m∠B + m∠C = 180

=> 140 + m∠C = 180

=> m∠C = 40

Hence the answer is  m∠C = 40

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