Complete the following Given : line l II line m Line n is a transversal . To prove : ∠d = ∠b Proof : ∠d +∠c = ( --- ) (angles in linear pair ) --- (1) ∠c +∠b = ( --- ) ( Property of interior angles of parallel pair ) --- (2) ∠d +(---) = ∠c +(---) ----- (from 1 and 2 ) ∴ (---) = (---) -- - - ( eliminating ∠c)
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line I II line m line n is a transversal
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