Question

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If ΔABC has A = 100 ° and AB = AC then get the measurement of B.​

Answer 1

Answer:

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Step-by-step explanation:

AB=AC

∠B=∠C [Angles opposite to equal sides are equal]

In △ABC,

∠A+∠B+∠C=180

100 +2∠B=180

∠B=40

Therefore,

∠B=∠C=40

Answer 2

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Refer to the attachment for figure:

=>AB = AC

=>∠B = ∠C [Angles opposite to equal sides are equal]

Now:-

In △ABC,

=> ∠A + ∠B + ∠C = 180°

=> ∠A + 2∠B + 180°

=> 100° + 2∠B=180°

=> 2∠B = (180-100)°

=> 2∠B = 80°

=> ∠B = 40°

• Hence the measurement of ∠B is 40°

Hope it helps you ✔️

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