The angle of a quadrilateral are x, X-100, x + 300 and 2x, then the smallest angle is
1) 98°
2) 680
3)58°
4) 48°
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angle sum property of quadrilateral
angle A +B +C +D =360
x+ x-100+x+300+2x=360
5x +200=360
5x=360-200
5x=160
x=32
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