Answers

2015-12-24T13:51:56+05:30
 opp angles are equal
angles
a+b+c+d = 360*
115+x+115+x = 360
2x = 360-115+115=130
x = 130/2
x = 65*
so angle a = angle c = 115*
angle b = angle d = 65*

opp sides are equal 
so
ab = dc =5cm
ad=bc=7cm
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2015-12-24T15:26:26+05:30
1) it is given that ,
cd = 5 cm, 
ad =7 cm 
 in  a parallelogram  as opp sides are equal ad = bc = 7 cm
and ab = dc = 5 cm
and as angles are equal in a ll gm <a = < c = 115 degrees
the sum of all <'s in a ii gm = 360 degrees 
so, 360-230=130( 115 + 115 =230 )
230 /2 =65 
hence ,< a =115, <c =115 ,<b = 65 and < d =65

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