Question

What's the value of x and y?

Answer 1

a. x = 54°, y = 63°
b. x = 72°, y = 54°
c. x = 54°, y = 72°
d. x = 63°, y = 54°

Answer 2

Can you tell me the size of the unlabeled angle in the triangle?

Answer 3

No:(

Answer 4

Are you sure? Isn't it a supplementary angle to 126 degrees?

Answer 5

so it's b or c, right?

Answer 6

Well, if the outside angle was 126, the inside must be 180-126 = 54 degrees. That means that we have to eliminate any answer choices which do not add up to 126 degrees.

That leaves b and c, as you suggested. Now which one to choose? Here I think you need to just look at the diagram and choose the one which best matches what you see.

Answer 7

Which angle is larger, x or y?