Question

How to find the missing angle if your only given one angle.

Answer 1

asssuming its a parallelogram

Explanation:

parallelogram - the opposing angles equal each other, so if you have one, you have another as well. the total internal angles of a parallelogram equal 360 degrees, so

360 = 2x + 2y

where x is the angle that you have and y is the missing angle

Answer 2

it depends on the triangle, but normally you would subtract the angle by 90 and the divide by 2