Question

Match the reasons with the statements in the proof to prove DF = EF, given that DEF is a triangle by definition and angles 3 and 4 are equal. Given: DEF 3 = 4 Prove: DF = EF

Answer 1

Because angle <3 and angle <4 are equal, it follows that they are congruent. From this tt follows then that the opposite sides are equal/congruent (an if and only if derive from isosceles triangles).