1. Triangle ABC is shown below.

The flow chart with missing reason proves the measures of the interior angles of rABC total 180°.

Which reason can be used to fill in the numbered blank space? (4 points)
Alternate Exterior Angles Theorem
Alternate Interior Angles Theorem
Corresponding Angles Postulate
Same-Side Interior Angles

Question

1.   Triangle ABC is shown below. 



The flow chart with missing reason proves the measures of the interior angles of rABC total 180°. 



Which reason can be used to fill in the numbered blank space?  (4 points)
Alternate Exterior Angles Theorem
Alternate Interior Angles Theorem
Corresponding Angles Postulate
Same-Side Interior Angles

anonymous · Answer

First image

anonymous · Answer

Second Image

paxpolaris · Answer

|dw:1337285400760:dw|also alternate interior angles

anonymous · Answer

That's what I was thinking, but wasn't completely sure. Thanks!