9th mathematics NCERT exercise questions with answers, Mathematics

Quadrilaterals – Exercise 8.1 – Class IX

The angles of quadrilateral are in the ratio 3 : 5 : 9 : 13. Find all the angles of the quadrilateral. Solution: Suppose the measures of four angles are 3x, 5x, 9x and 13x Then, 3x + 5x + 9x + 13x = 360˚ 30x = 360˚ x = 360˚/30 = 12˚ 3x =… Continue reading Quadrilaterals – Exercise 8.1 – Class IX

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