Question

You guys know the drill,

Triangle ABC has side lengths of 2 cm, 4 cm and 5 cm. Triangle DEF has side lengths of 6 cm, 11cm, and 20 cm. Can triangle ABC and triangle DEF be dilations of each other? Explain.

Answer 1

No because they are not proportional. 2•3=6 but 4•3 does not equal 11.