Find the size of angles of a parallelogram if one angle is 20 degree less than twice the smallest angle.
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Let the smallest angle be x
So, 2x-20= y
2x-y=20.........(1 equation)
Adjacent angle sum is 180.
X+y= 180 .........(2)
Add 1&2 we get
3x= 200
X= 200/3 then find y .
You are sure their is 20 b'coz answers in decimal.
So, 2x-20= y
2x-y=20.........(1 equation)
Adjacent angle sum is 180.
X+y= 180 .........(2)
Add 1&2 we get
3x= 200
X= 200/3 then find y .
You are sure their is 20 b'coz answers in decimal.
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