. The measure of an exterior angle of a triangle is ________.
A. greater than the measure of either of the remote interior angles.
B. 180 degrees
C. equal to the sum of the measures of the other two exterior angles.
D. 90 degrees

Question

. The measure of an exterior angle of a triangle is ________.
A. 	greater than the measure of either of the remote interior angles.
B. 	180 degrees
C. 	equal to the sum of the measures of the other two exterior angles.
D. 	90 degrees

theeric · Answer

Here is a great reference for you: http://www.mathopenref.com/triangleextangle.html That is a good site.

theeric · Answer

You can eliminate two options immediately if you look at that link.

anonymous · Answer

i can eliminate c and d @theEric

theeric · Answer

Why?

theeric · Answer

I'll help you get all the way to the correct answer, but you'll be the one to get there. I'll help guide you.

anonymous · Answer

the link says "An exterior angle of a triangle is equal to the sum of the opposite interior angles."  
C is explaining exterior

theeric · Answer

Right! There you have your answer :)
And I could prove it, but we don't need to go into that if you can just memorize it. :)

Congrats!