Answer:
triangles unfold into a 180 degree angle so...
Explanation:
Alright so the two dashes in a line means they are equivalent so if I only give one final answer use it for both...
D: 180-52=128 now divide by two since equal angles so 64 degrees for the angles
E: 180-90=90, 90/2 so 45 degrees for those angles
F: okay interesting 180-130= 50 degrees so that's the inside angle there for x and y so to find z its 180- 100 which is 80 x&y is 50 while z's 80
G: 180-36=144 divide that by two and viola 72 is the answer
H: the angle of 86 is correct since mirrored. so x is 86. now for the unlisted angle 180-124= 66 so to find y 86+66=152 so 180-152=28. So x=86 y=28 and the unlisted is 66.
(Sorry for my chaotic explanations but I saw the time crunch "!!!!")