Question

In triangle ABC , BC = AB and angle B = 80° then angle of A is equal to​

Answer 1

Explanation:

A is equal to C

A+B+C = 180°

LET A AND C BE X

X+80+X = 180°

2X + 80 =180°

2X= 100

X= 50°

hence A =50°

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Answer 2

Answer:

• Angle of A is 50°

because if BC = AB then it's isosceles triangle where 2 angles are same i.e, Angle A = Angle B and if third angle (B) is 80° then,

》Angle of one of the 2 equal angles = (Total angle in traingle - third angle)/2

》(180° - 80°)/2= 100°/2= 50°

So, the angle of A is 50°.

Hope you understood just see the figure to understand....