The angles of a quadrilateral are (5x) , (3.x + 10)" , (6 x - 20) and (x + 25). Find (i) the value of x and (ii) the measure of each angle of the quadrilateral.
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sum of the angles of a quadrilateral is 360
so,
5x+3x+10+6x-20+x+25=360
=> 15x+15=360
=> 15x=360-15
=> 15x=345
=> x=345/15
=> x=23
value of x is 23
angles are
5×23=115
3×23+10=69+10=79
6×23-20=138-20=118
23+25=48
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