Q. 1 B3.8( 15 Votes )

# D and E are points on the sides AB and AC respectively of a ΔABC such that DE || BC.If AB = 13.3 cm, AC = 11.9 cm and EC = 5.1 cm, find AD.

Given: AB = 13.3 cm, AC = 11.9 cm and EC = 5.1 cm.

Applying Thale’s Theorem,

Since we need to find DB first, we add 1 on both sides

DB = 5.7

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