Question

Which postualte or theorem could be used to prove that EFG = HFG?

Answer 1

AAA (Angle-Angle-Angle) Theorem

Explanation:

We see that
`\angle E\cong\angle H`,
`\angle F` is congruent to itself, and
`\angle G` is congruent to itself. Thus, with 3 angle congruency statements, we could use the AAA Theorem to prove that the triangles are congruent to each other.