CBSE Board Practice

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CBSE Grade IX - Quadrilaterals

Question 1

1.	In rhombus JKLM , diagonals   JL     and   KM     intersect at N . Then ∠MJN ≠
	∠KLN ∠NJK ∠JNM ∠NLM

Question 2

2.	P, Q, R are the mid-points of the sides of triangle EFG. If the perimeter of the △EFG is 52 cm , the perimeter of △PQR is
	24.0 cm 27.0 cm 28.0 cm 25.0 cm 26.0 cm

Question 3

3.	In the figure given below, BCDE is a rhombus. Find the values of x and y
	x = 45.42° , y = 45.42° x = 42.42° , y = 42.42° x = 46.42° , y = 46.42° x = 43.42° , y = 43.42° x = 44.42° , y = 44.42°

Question 4

4.	The diagonals of the parallelogram are
	PO     ,   NQ       PQ     ,   NO       OR     ,   NP       OR     ,   NQ       OQ     ,   NP

Question 5

5.	Two adjacent angles of a parallelogram FGHI are in the ratio 15 : 21. Find the measure of each of its angles.
	F = 73° , G = 107° , H = 74° , I = 106° F = 77° , G = 104° , H = 73° , I = 106° F = 74° , G = 103° , H = 76° , I = 107° F = 76° , G = 104° , H = 77° , I = 103° F = 75° , G = 105° , H = 75° , I = 105°

Question 6

6.	In rhombus FGHI , diagonals   FH     and   GI     intersect at J . Then ∠IJH ≠
	∠GJF ∠FJI ∠IFG ∠HJG

Question 7

7.	In rhombus KLMN , diagonals   KM     and   LN     intersect at O . Then △OMN ≇
	△NKL △OKL △OKN △OML

Question 8

8.	In the adjoining figure, MNOP is a parallelogram and QR is such that   QR     ∥   MO     If ∠MPQ = 23.7° and ∠OPR = 40.16° , find the measure of ∠MNO .
	114.14° 115.14° 118.14° 117.14° 116.14°

Question 9

9.	In the given figure △CDE , F is the mid-point of     CD     and     FG     ∥   DE     , then   CG =
	EC CD FD GE CF

Question 10

10.	In kite OPQR ,   OQ     and   PR     are diagonals. Then QR =
	OQ OP PR PQ RO

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