Triangle ABC has sides 6 cm, 8 cm and 10 cm

MATHEMATICS · Multi-part · IGCSE · Maths · Geometry · Geometry

Problem

Triangle ABC has sides 6 cm, 8 cm and 10 cm. Triangle DEF has two of its sides equal to 9 cm and 12 cm, and its perimeter is 36 cm. (i) Show that the two triangles are similar. (ii) Find the third side of triangle DEF.

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