What is the first mistake Presley made in the proof? ∠H≅∠Hangle, H, \cong, angle, H Reflexive property 2 \dfrac{FH}{GH}=\dfrac86 GH FH ​ = 6 8 ​ start fraction, F, H, divided by, G, H, end fraction, equals, start fraction, 8, divided by, 6, end fraction Substitute given values. 3 \dfrac{JH}{IH}=\dfrac64 IH JH ​ = 4 6 ​ start fraction, J, H, divided by, I, H, end fraction, equals, start fraction, 6, divided by, 4, end fraction Substitute given values. 4 \dfrac{FH}{GH}=\dfrac{JH}{IH} GH FH ​ = IH JH ​ start fraction, F, H, divided by, G, H, end fraction, equals, start fraction, J, H, divided by, I, H, end fraction Substitute (2,3) 5 \triangle FHJ \sim \triangle GHI△FHJ∼△GHItriangle, F, H, J, \sim, triangle, G, H, I Side-angle-side similarity (1,4)