In Fig. 7.142, if AB⊥BC,DE⊥BC and DE⊥AC, prove that ΔCED∼ΔABC.
In a ΔABC, if DE∥BC, prove that AB/AD=AC/AE.
In Fig. AC = AE, AB = AD and ∠ BAD = ∠ EAC. Prove that BC = DE. [2 MARKS]