Mathematics
In the given diagram, △ ABC is right angled at ∠B. BDFE is a rectangle. AD = 6 cm, CE = 4 cm and BC = 12 cm.
(a) prove that △ADF ~ △FEC.
(b) prove that △ADF ~ △ABC.
(c) find the length of FE
(d) find area △ADF : area △ABC
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