Aug 08, 2017 · Therefore, by SSS-criterion of similarity, we have. D PQR ~ D DEF (iii) In D ‘s MNP and EFG, we observe that. Therefore, these two triangles are not similar as they do not fulfill SSS-criterion of similarity. (iv) In D ‘s DEF and MNP, we have. Ð D = Ð M = 70° Ð E = Ð N = 80° [Ð N = 180° – Ð M – Ð P = 180° – 70° – 30 ... Explore this multitude of printable similar triangles worksheets for grade 8 and high school students; featuring exercises on identifying similar triangles, determining the scale factors of similar triangles, calculating side lengths of triangles, writing the similarity statements; finding similarity based on SSS, SAS and AA theorems, solving algebraic expressions to find the side length and ...