What a deviously misleading diagram.

The triangle on the left isn't actually a right angle triangle, as the other angles add to 100°, meaning the final one is actually 80°, not 90°.

Therefore the triangle on the right also isn't a right angle triangle. That corner is 100°.

100+35=135°. 180-135=45°. So that's 45° for the top angle.

X = the straight line of the joined triangles (180°) - the top angle of the right triangle (45°). 180-45=135°

X is 135°, not the 125° it initially appears to be.

All these people saying its 135 are making big assumptions that I think is incorrect. There’s one triangle (the left one) that has the angles 40, 60, 80. The 80 degrees is calculated based on the other angles. What's very important is the fact that these triangles appear to have a shared 90 degree corner, but that is not the case based on what we just calculated. This means the image is not to scale and we must not make any visual assumptions. So that means we can’t figure out the angles of the right triangle since we only have information of 1 angle (the other can’t be figured out since we can’t assume its actually aligned at the bottom since the graph is now obviously not to scale).

Someone correct me if I'm wrong.

135

trash diagram too, the 90 degree looking center angle is actually 80 on the left, 100 on the right.

180 - (100 + 35) = y

x = 180 -y

I can't be assed to do the simple math

135

I like that all the comments are people discussing the diagram.

Right one does not depend on the left one. 3rd dimension for the win!

C'man there's totally a 1px shift on the line. You can't just assume it's a right angle.

The answer is 125 degrees but the triangle on the left has 190 degrees in it

125°

Edit: Damn I'm getting roasted for getting it wrong. I totally am wrong, but when I've been awake for only 5 minutes that's bound to happen XD

Either this is drawn wrong or they broke geometry

the answers here assume that the base is a continuous, straight line

given one of the angles on the left triangle is a right angle on the diagram, but 80 if you calculate it, you can't assume that

Doing 5th grade math makes me feel like a fucking genius. Cant believe I figured it out tbh