Question

A pair of supplementary angles are_____________.
A. A and B
B. B and D
C. C and E​

Answer 1

A pair of supplementary angles are C and E. We know that B, D, and E are all congruent, and can see that both C and B, and C and D would form supplementary angles. So, we can also use E to form supplementary angles.

Hope this helps! :)