Answer:
1: 20 degrees
2: 90 degrees
3: 70 degrees
4: 35 degrees
Explanation:
I solved angle 1 by looking at the angle measure right below it, and those two are equivalent angles.
I solved angle 3 by concluding that it was a right angle, and a right angle is equivalent to 90 degrees.
I solved angle 3 by adding 90+20 which equals 110 and subtracting that from 180. The unlabeled angle that is part of the same triangle would equal 90 degrees since it is a right angle. 180 degrees is the total degrees for every triangle out there.
I solved angle 4 by looking at the triangle above that triangle, and they seem to be equivalent triangles, so 35 degrees would be angle 4.
I'm sorry if this is a little confusing, just know I'm trying lol