Question

If three parallel lines are cut by a transversal and one angle is measured to be 90°, what can be said of the remaining angles?

A. Only some of the remaining angles are 90°.
B. They will all be complementary to each other.
C. There isn't enough information to determine anything about the remaining angles.
D. They're all 90° also.

Answer 1

let’s say here are your three lines: |||. and there’s a transversal that goes vertically through them: |||-. if the transversal goes through one line and creates a 90 degree angle it’s a straight line so that means it’s going to pass through all three making the same angles on all three lines. therefore the answer is D, all the angles are 90 degrees.