Question

In the given figure AB = AC andACD = 125°. Find A​

Answer 1

Step-by-step explanation:

IN ∆ABC

AB = AC SO,

ANGLE C = ANGLE B

NOW,

ACB + ACD = 180°

ACB = 180° -125°

ACB = 55°

ANGLE C = ANGLE B•••••••[1]

IN ∆ABC

A + B + C = 180°

A + C + C = 180° 【B = C 】 FROM [1]

A + 55° + 55° =180°

A = 180° - 110°

A = 70°

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Answer 2

Step-by-step explanation:

70°

180-125=55

B=C

180-(55+55)=70