Mathematics

Grade-8

Easy

Question

# Find the measures of unknown angles.

- 40
^{o} - 60
^{o} - 50
^{o} - 80
^{o}

^{o}^{o}^{o}^{o}Hint:

### Two sides of the triangle are equal.

We know the angles opposite to equal sides are equal.

We know that the sum of interior angles of a triangle is 180.

## The correct answer is: 50^{o}

### Given: Two sides of the triangle are equal.

We know the angles opposite to equal sides are equal.

So, angle x = angle y

We know that the sum of interior angles of a triangle is 180.

angle x + angle y + 80 = 180

2 angle x = 100 degree

angle x = 100/2

angle x =50

So, the measure of angle x and angle y is 50.

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