Question

Solve the problem for number 13.​

Answer 1

if the shape is a triangle, just find the 3rd number and they should all add to 180 degrees.

Answer 2

m ∠Y = 39°

Explanation:

The sum of all angles in a triangle is 180°, so you just have to add m∠Z and m∠X, which will be 113 + 28 = 141. 180 - 141 = 39°