Answers

2016-03-02T19:50:54+05:30
Given : DEAR is an isosceles trapezium 
Construction :FA ║DR and FA = DR
Proof :
as FA ║DR and FA = DR ; DFAR is a parallelogram
∠1+∠2 = 180°____________(1)
 as DR=EA and DR = FA
∴FA =EA
∴ΔFAE is an isosceles triangle
∠3=∠2
∠4+∠3 = 180° (linear pair)________(2)

from (1) and (2) we get 

∠4+∠3=∠1+∠2

∠4=∠1  (as ∠3=∠2)

hence ∠D =∠E

proved ......................

hope it helped :)



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2016-03-02T22:48:25+05:30
Hence proved that ang D is egual to ang E
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