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Mathematics

Grade-8

Easy

Question

What is the value of x ?

8^o
5^o
10^o
2^o

hint Hint:

We know the measure of the exterior angle of a triangle is equal to the sum of the measures of its
remote interior angles.

The correct answer is: 5^o

We know the measure of the exterior angle of a triangle is equal to the sum of the measures of its
remote interior angles.
So, 12x+9x=105
21x=105
x=105/21
x=5
so, the value of x is 5.

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