find four angles A,B,C and D of the parallelogram angle B=3x, angle C=5x and angle D =2x
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3x+ 5x=180°
x = 180°/8= 10°
Three angles= 10×3, 10× 5, 10×2= 30°,50° and 20°.
Angle A= 180°- angle B
A= 180-30= 150°
x = 180°/8= 10°
Three angles= 10×3, 10× 5, 10×2= 30°,50° and 20°.
Angle A= 180°- angle B
A= 180-30= 150°
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