NCERT Solutions Class 9 Mathematics Chapter 8 Quadrilaterals

Exercise 8.1 Q.1) The angles of a quadrilateral are in the ratio 3 ∶ 5 ∶ 9 ∶ 13. Find all the angles of the quadrilateral. Sol.1) Suppose the measures of four angles are 3𝑥, 5𝑥, 9𝑥 and 13𝑥. ∴ 3𝑥 + 5𝑥 + 9𝑥 + 13𝑥 = 360° [Angle sum property of a quadrilateral] ⇒ 30𝑥 = 360…