Question

find the value of x -115 degree​

Answer 1

Step-by-step explanation:

The triangle is isosceles so the other two angles are the same.

Since all the angles in a triangle add up to 180∘ then those angles are 70∘ each. Now, x is the suplementary angle to one of them i.e. 70∘+x=180∘ therefore x=110∘

Answer 2

Answer:

let the angle be x.

complementary angle =90-x

supplementary angle=180-x

according to question

180-x=3 (90-x)

180-x=270-3x

-x+3x=270-180

2x=90

x=45

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