(2) The angles of quadrilateral are in the ratio 3: 5: 9:13. Find all the angles of the quadrilateral.
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Let the constant be x.
» 3x + 5x + 9x + 13x = 360
» 30x = 360
» x = 12⁰
Angles are 36⁰, 60⁰, 108⁰ and 132⁰.
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