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Triangle ABC is shown:

Given: Angle ABC

Prove: All three angles of Angle ABC add up to 180°

The flowchart with missing reason proves the measures of the interior angles of Angles of ABC total 180°.

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

A) Definition of Supplementary angles

B) Substitution

C) Definition of Complementary Angles

D) Angle Addition Postulate​

Respuesta :

Answer:

the answer is C

Step-by-step explanation:

PsychosocialAmelie

Answer: D) Angle Addition Postulate

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

I hope this helps!

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