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In a figure pqrs and aqbc are parallelogram . if s = 70 , find the angle of acb

Posted by Kayarohanam Ramadass 8 years, 10 months ago

CBSE > Class 09 > Mathematics

2 answers

Innocent Geeta 8 years, 10 months ago

I hope that this answer may helped you!!!!!!!

1Thank You

Innocent Geeta 8 years, 10 months ago

hllo,

we know that the opposite angles are always equal in the case of parallelogram and also the sum of all angles is equal to 360 degree

by these properties of palrallelogram <i>L</i>s=Lq

so <i> </i>Lq=70 degree

so, by the second property

Lp=Lr,

so we can write Lp in the place of Lr

so Lp+Lq+Lr+Ls= 360

2 Lp +70+70=360

2 Lp=360-140

Lp=220/2

Lp=110

hence Lr=110

2Thank You

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CBSE > Class 09 > Mathematics