Question

Find the measure of y in the drawing.

51°
129°
61°
139°

Answer 1

y = 129°

Explanation:

Answer 2

B) y = 129º

Explanation:

since a triangle is 180º in total, the you have to subtract 71 and 58 from 180 which will give you 51º which gives you the amount for x

and the line that the triangle is on is also 180º in total, so you subtract the 51 from 180 to give you a total of 129º which is the amount for y