Question

the angles of a quadrilateral are in the ratio 3:7:1:9 find the measure of each of its angles

Answer 1

3x+7x+x+9x=360
x=360/20=18
3×18=54
7×18=126
1×18=18
9×18=162

Answer 2

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We know that sum of quadrilateral trangle =360°

then,

Let to be angle be x


3x+7x+x+9x=360
20x=360
x=360/20
x=18


then,

measuring of angle

3x=3*18=54

7x=7*18=126

x=18

9x=9*18=162