Question

In a parallelogram, consecutive angles are always _____. complementary supplementary
congruent right angles

Answer 1

You need some definitions to answer this question.

http://www.mathsisfun.com/geometry/consecutive-interior-angles.html

Two Angles are Supplementary if they add up to 180 degrees.
Two Angles are Complementary if they add up to 90 degrees.
Congruent means the same angle measurement.
And right angles are 90 degree angles.

You could probably look at a parallelogram and figure it out now.