Answer:
See below.
Explanation:
Here's a paragraph proof:
We are given that EH and GH are congruent. That is 1 pair of congruent sides of two triangles.
We are given that F is the midpoint of EG. By the definition of midpoint, segments EF and GF are congruent. That is a second pair of congruent sides of the triangles.
Segment FH is congruent to itself. Segment FH is a side of both triangles. That is a third pair of congruent sides of the triangles.
By SSS, triangles EFH and GFH are congruent.