Ex 9.3, 7
Last updated at March 2, 2017 by Teachoo
Transcript
Ex 9.3, 7 D and E are points on sides AB and AC respectively of ΔABC such that ar (DBC) = ar (EBC). Prove that DE ∥ BC. Given: ∆ ABC where D and E are points on sides AB and AC such that ar (DBC) = ar (EBC) To prove: DE ∥ BC Proof : ΔDBC and ΔEBC are lying on a common base BC and have equal areas, & they lie between the lines DE and BC. So, DE ∥ BC Hence proved
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