Two triangles DEF and XYZ are similar to each other. If DE = 5 cm, DF = 7 cm, and XY = 15 cm, then find XZ.
According to the question, If two triangles are similar, then their corresponding sides are in the same proportion. So, (XY/DE) = (XZ/DF) Or, (15/5) = (XZ/7) Or, XZ = 3 x 7 = 21 cm
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