Question

Lines m and n are parallel. Which angle must be congruent to angle 4?

Answer 1

Here is a picture:

Answer 2

My choices:

A. angle 5

B. angle 1

C. angle 7

D. angle 2

Answer 3

D

Answer 4

Anyone else? :P

Answer 5

D

Answer 6

VERTICAL ANGLES

Answer 7

So is it D or B? :P

Answer 8

B is not correct.
Angle 4 and angle 1 are two adjacent angles that compose a straight angle, which are supplementary but not necessarily congruent.

Answer 9

I am asking which one is congruent to angle 4:P

Answer 10

D is correct, since two opposite angles created by the intersection of two lines are congruent.