Answer:
FI = 69
Step-by-step explanation:
So first off we look at if these 2 right triangles are congruent to each other.
They infact are by rule AAS (angle, angle, side). FGH and FIH are both 90 Degrees so that is a congruent angle. --> It is given that FHG and FHI are both
60 Degrees --> and we know that FH is equal from mirroring => from this we get, AAS Which proves they are congruent. From this we pull that FG = FI and thus, FI is 69
Hope this helps!
