one angle of a triangle has measure 2/9 and the.....
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question 13
the sum of all angle of a quadrilateral=360 °
3x+4x+5x+6x=360
18x=360
x=20
3*20=60
4*20=80
5*20=100
6*20=120
the sum of all angle of a quadrilateral=360 °
3x+4x+5x+6x=360
18x=360
x=20
3*20=60
4*20=80
5*20=100
6*20=120
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