Question

Triangles ACB and DFE are shown below.


Given: In ∆ACB, c2 = a2 + b2.
Prove: ∆ACB is a right angle.

Complete the flow chart proof with missing reasons to prove that ∆ACB is a right angle.



Which pair of reasons correctly completes this proof?

Reason #1 - Reflexive Property of Equality
Reason #2 - SSS Postulate

Reason #1 - Substitution
Reason #2 - SAS Postulate

Reason #1 - Substitution
Reason #2 - SSS Postulate

Reason #1 - Reflexive Property of Equality
Reason #2 - SAS Postulate

Answer 1

@Hero