A) 71:21
B) 12:11
C) 31:35
D) 4:7
Correct Answer: C
Solution :
We know that in a parallelogram opposite sides are equal. \[\angle 6=\angle 3\] \[\angle 1=\angle 2\] \[\angle 3=\angle 5\] \[{{180}^{o}}\] and \[\angle 1+\angle 3={{180}^{o}}\] or \[\angle 5+\angle 2={{180}^{o}}\] ?.(i) or \[1||m||n\] ....(ii) Adding \[\angle A,\angle B\] or \[\angle C\] and \[{{180}^{o}}\] Substituting we have, AB = 31 cm and BC = 35 cm.
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