Question

PLEASE CHECK TO SEE IF THIS IS RIGHT
The figure below shows a parallelogram ABCD.

The flow chart with missing reason proves that consecutive angles of a parallelogram add to 180°.

Which reason can be used to fill in the blank spaces?
Alternate interior angles are congruent.
Definition of a parallelogram
Same side interior angles theorem
Definition of supplementary angles

Answer 1

Sorry, my answer was definition of supplementary angles.

Answer 2

Both blanks have the same reason. If a transversal passes though two parallel lines, then the sum of the angles on the same side of the transversal would be 180 degrees.

Answer 3

Do you need an explanation or that's it?

Answer 4

No. So is that correct?

Answer 5

What ? My answer? Yes that is.

Answer 6

ok thanks!