ABCD is a trapezium such that AB||DC. Find ∠D and ∠C and verify that sum of the four angles is 360degree.
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it is a rule that a quadilateral has sum of all the angle =360 degree
and trapezium is a type of quadilater
and trapezium is a type of quadilater
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Sol:- AB|| DC
<C=[ 90°+(90°-70°)]
= 90°+20°
= 110°
<D= 180°- 40°
= 140°
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