Triangle abc is shown below:

given: δabc

prove: all three angles of δabc add up to 180°.

the flowchart with missing reason proves the measures of the interior angles of δabc total 180°:

which reason can be used to fill in the numbered blank space?

a. associative property of addition
b. triangle exterior angle theorem
c. angle addition postulate
d. commutative property of addition

C. Angle Addition Postulate

You are using the angle measurements of angle EBC, angle CBA, and angle DBA to get 180°

I hope this helps!

0/5 is 0, 2/0 is undefined, and 0/0 is indeterminate.

step-by-step explanation:

hope my answer has you!

∠lno ≅ ∠lnm

∠oln ≅ ∠mln

step-by-step explanation:

given   that triangle lno is congruent to triangle lnm.

we have to fill up the blanks in the given question.

according to above order of congruency   kept in mind we can say that

∠lno ≅ ∠lnm

∠oln ≅ ∠mln

ln ≅ ln due to common in both.

hence, by sas congruency,

the side angle side rule   states that if two sides and the included angle of one triangle are congruent to another triangle, then these two triangles are congruent.