2. if df = hf, name one more pair of congruent
angles needed to prove triangle dfg = triangle hfe by aas.

angle DGF and angle HEF

Step-by-step explanation:

AAS postulate states that if two angles and the non-included side of one triangle are congruent to two angles and the non-included side of another triangle, then these two triangles are congruent.

In triangles DFG and HFE,

So, to use AAS postulate, angles DGF and HEF must be congruent.

Hence, the one more pair of congruent angles is angle DGF and angle HEF.

3. (5x + 1) - (-10x + 6)

simplify the answer choice. combine like terms. remember to distribute the negative to the terms inside the second parenthesis. also remember that two negatives = one positive, and one of each sign = negative.

- (-10x + 6) = + 10x - 6

simplify. combine like terms:

5x + 1 + 10x - 6

5x + 10x + 1 - 6

15x - 5

∴ it is your answer

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