Question

in the given figure, AB = AC and angle B = 50° then ; angle A is? ​

Answer 1

Answer:

80°

Step-by-step explanation:

AB=AC

Therefore, ∠B=∠C (Angles Opposite to equal sides are equal)

∠A+∠B+∠C=180° (Angle Sum Property)

or, ∠A+50°+50°=180°

or, ∠A+100°=180°

or, ∠A=180°-100°

or, ∠A=80°

Therefore, ∠A=80°

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Answer 2

Answer:

80°

Step-by-step explanation:

Given : AB = AC

∠B = 50

find = ∠A

∠B = ∠C [ AB = AC given]

∠ 50° = ∠50°

[ Angle sum property ]

∠A+∠B+∠C= 180°

x+50°+50° = 180°

x + 100° = 180°

x = 180° - 100°

x = 80°

or

∠A = 80°