Question

31.In triangle ABC, if AB=BC and ∠B = 70, ∠A will be:

Answer 1

Answer:

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Step-by-step explanation:

Since, AB = AC, therefore, ∠B=∠C

By angle sum property of triangle,

∠A+∠B+∠C=180o

70o+2∠B=180o

2∠B=110o

∠B=55o

Hence, ∠B=∠C=55o

Answer 2

Answer:

AB=BC

means TRIANGLE is isoceles

therefore angle B=AngleC=70degree

anglea+angleb+anglec=180

70+70+angle A=180

ANGLE A=180-140

ANGLE A=40

HOPE THIS HELPS!