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Showing posts from December 30, 2009

Class IX, NCERT (CBSE) Mathematics | Quadrilaterals, Introduction (Chapter 8.1)

Class IX, Mathematics (Quadrilaterals) NCERT (CBSE) Textbook Exercise 8.1 Solution (Page 146 - 147) Question 1: The angles of quadrilateral are in the ratio 3: 5: 9: 13. Find all the angles of the quadrilateral. Ans: Let us assume that the common ratio between the angles of quadrilateral be x. Therefore, the angles will be 3x, 5x, 9x, and 13x respectively. As the sum of all interior