Question

An exterior angle of a triangle is 110° and it's two interior angles are equal. Each of these equal angles is :-
(a) 70°
(b) 55°
(c) 35°
(d) 27 1/2°
Please explain​

Answer 1

Answer:

If one exterior angle is 110, then opposite interior angle to it is of (180-110=70°)

Then,

Let the other two equal interior angles be x and x, then

x+x+70=180

2x=180-70

2x=110

x=55

All interior angles are 55,55,70

Step-by-step explanation:

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Answer 2

Answer:

(a) 70° or b) 55°

Step-by-step explanation:

Exterior angle+ interior angle = 180° => Interior angle= 70°

Other 2 angles are (if equal): 110°/2= 55°

If 2 angles are equal to 70°, then the other angle= 180°- 2*70°= 40°

Answer: options (a) or (b) are correct