Find the measure of each angle of the parallelogram. 6. Find the perimeter of a parallelogram if one of its sides is 3.2 cm long and the adjacent side is In find all the angle 3 times of it.
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Let two adjacent angles A and B of ∥gm ABCD be 3x and 2x respectively.
Since the adjacent angles of a parallelogram are supplementary.
∠A+∠B=180
o
⇒3x+2x=180
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⇒5x=180
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⇒x=
5
180
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=36
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∴∠3×36
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=108
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and, ∠B=2×36
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=72
o
Since the opposite angles are equal in a
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