David drew PQR and STU so that P S, PR = 12, SU = 3, PQ = 20, and ST = 5. Are PQR and STU similar? If so, identify the similarity postulate or theorem that applies.
PR : PQ = 12 : 20 = 3 : 5 SU : ST = 3 : 5 and ∠ P = ∠ S SAS: side, angle, side. The triangles are similar if: - the ratio between 2 sides of one triangle is the same as the ratio between 2 sides of another. - the included angles are equal. Triangles PQR and STU are similar.
