NCERT Solutions Class 9 Maths Chapter 8 Quadrilaterals - Click

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Grade 9 Maths Q. The angle of quadrilateral are in the ratio 3 : 5 : 9 :13. Find the all the angles of the quadrilateral.
Grade 9 Maths Q. If the diagonals of a parallelogram are equal, then show that it is a rectangle.
Grade 9 Maths Q. Show that if the diagonals of a quadrilateral bisect each other at right angles, then it is a rhombus.
Show that if the diagonals of a quadrilateral are equal and bisect each other at right angles, then it is a square.
Grade 9 Maths Q. In parallelogram ABCD, two points P and Q are taken on diagonal BD such that DP=BQ (see the given figure) Show that:
ABCD is a parallelogram and AP and CQ are perpendiculars from vertices A and C on diagonal BD( See the given figure). Show that ΔAPB ≅ΔCQD
Grade 9 Maths Q. ABCD is a trapezium in which AB parallel CD and AD =BC (see the given figure). Show that ∠A = ∠B.