FAN, MEDAL, and TESTIMONIAL for best answer!!!!!!!!!

Triangle ABC is shown below.

Question

FAN, MEDAL, and TESTIMONIAL for best answer!!!!!!!!!

Triangle ABC is shown below.

domebotnos · Answer

attachment

domebotnos · Answer

Given: ∆ABC 

Prove: All three angles of ∆ABC add up to 180°.


The flow chart with missing reason proves the measures of the interior angles of ∆ABC total 180°.

domebotnos · Answer

attachment

domebotnos · Answer

Which reason can be used to fill in the numbered blank space?

A.  Alternate Exterior Angles Theorem

B.  Same-Side Interior Angles

C.  Corresponding Angles Postulate

D.  Alternate Interior Angles Theorem

domebotnos · Answer

@jim_thompson5910 @ganeshie8 @nikato @MelissaHolmes @math&ing001 @megangray32

anonymous · Answer

@Hero

nikato · Answer

D. 
Becuz DBA and BAC are alternative interior angle.