in a parallelogram ABCD,AB=3x+2,DC=5x-8and angle A=2angle B.find (1) all angles of the parallelogram (2) lenth of AB
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Answer:
2x+x = 180
3x =180
x=60
angle A=120
angle B=60
angle C=120
angle D=60
there is a equaliteral triagle
5x-8=3x+2
2x=10
x=5
AB=5.5-8
AB=17
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In a parallelogram...AB= DC; & BC=DA.
SO, 3x+2 =5x-8.
2x =10 ; x= 5.
So , length of AB = 3 *5 +2 = 17 unit.
ang A = 2* ang B.
For parallelogram ang A+ ang B = 180 ; ang A= ang C & ang B = ang D.
So let ang B =x.
So, 3x =180.
x= 60.
So. Ang B = Ang D = 60.
Ang A = Ang C = 2 * 60 = 120.
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