Question

10. What is the measure of angle y?

Answer 1

50°

Explanation:

Angles in a triangle always add up to 180°.

The square (bottom left of triangle) is a right angle and right angles always equal 90° and the other one is 40°, so you would add them up. This equals 130°.

To find y, you would have to do 180° minus 130° which is 50°.

Hope this helps :)

Answer 2

Answer:

y = 50*

Explanation:

Given angle: 40*

Other angle: 90*

Full angle: 180

40 + 90 = 130

180 - 130 = y

y = 50*