HELPPPPP !!! 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?

Definition of a parallelogram
Alternate interior angles are congruent.
Same side interior angles theorem
Definition of supplementary angles

Question

HELPPPPP !!! 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? 

Definition of a parallelogram 
Alternate interior angles are congruent. 
Same side interior angles theorem 
Definition of supplementary angles

anonymous · Answer

attachment

anonymous · Answer

attachment

nottim · Answer

wut you think

anonymous · Answer

I think its c buh im not shur....

ganeshie8 · Answer

C = $\checkmark$ why aren't you sure ?

anonymous · Answer

oh ok isee !!!! no I just put all the things together and I found it ! thnxs every one <3 !!

ganeshie8 · Answer

its just a game with transversals and parallel lines. good work !