Question

what is the measure of angle y
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Answer 1

Answer:

55°

Step-by-step explanation:

Exterior angle = sum of interior opposite angles

So, 115° = 60° + y

y = 115° - 60°

y = 55°

Answer 2

Given:

External angle=115°

Angle A=60°

To find:

The measure of angle y

Solution:

The measure of angle y is 55°.

In the triangle, ABC, the sum of interior and opposite angles are equal to the angle that is exterior to the triangle.

We are given the values of the exterior angle and angle A.

So, angle A+angle B=115°

Using the given angles,

60°+y=115°

y=115°-60°

y=55°

Therefore, the measure of angle y is 55°.