Calculator H Is A FHK similar to A GHJ ? If so, which postulate or theorem proves these two triangles are similar? 10 in. 15 in. G O A FHK is similar to A GHJ by the SSS Similarity Theorem . 12 in. O A FHK is similar to A GHJ by the 18 in. SSA Similarity Theorem . F O A FHK is similar to A GHJ by the K SAS Similarity Theorem . O AFHK is not similar to A GHJ