in a quadrilateral ABCD angle A,B,C and are in ratio 1:2;4:5 find the measure of angle
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let the common multiple be x
the measure of all angles of a quadrilateral is 360°
hence,
x+2x+4x+5x=360
3x+9x=360
12x=360
x=30
hence the measure of angles are
x=30°
2x=60°
4x=120°
5x=150°
the measure of all angles of a quadrilateral is 360°
hence,
x+2x+4x+5x=360
3x+9x=360
12x=360
x=30
hence the measure of angles are
x=30°
2x=60°
4x=120°
5x=150°
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