Question

Question in screenshot plz help

Answer 1

I wanna say 50 degrees. I'm not great at geometry though.

Answer 2

All of the angles in a triangle add up to 180 degrees. We know that the top angle is 55. We have one other angle outside of the triangle that is 105. The 105 angle and the angle inside the triangle, , must also add up to 180

Answer 3

To find that angle, we subtract 180-105, and that comes out to 75. Now we have 2 angles inside the triangle and all that's left to find is x. x = 180 - 55- 75

Answer 4

Another shortcut way.
The exterior angle of a triangle is equal to the sum of the remote interior angles.

Answer 5

Directly:
105=55+x
then x=?

Answer 6

It is "Exterior Angle Theorem".
http://www.freemathhelp.com/feliz-exterior-triangle.html

Hope that helps