CBSE Board Practice

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CBSE Grade IX - Quadrilaterals

Question 1

1.	Which of the following statements are true?
	a) Every rectangle is a parallelogram b) Every square is a rectangle c) Every rhombus is a parallelogram d) Every parallelogram is a rectangle e) Every parallelogram is a trapezium f) Every rectangle is a rhombus g) Every square is a rhombus
	{d,a} {f,b} {d,e,g} {a,b,c,e,g} {d,f,c}

Question 2

2.	In rhombus ABCD , diagonals   AC     and   BD     intersect at E . Then ∠EBC ≠
	∠CDE ∠ABE ∠DEC ∠EDA

Question 3

3.	The name of the quadrilateral is
	KLMN KMLN KLNO KMNL KLMO

Question 4

4.	Name all quadrilaterals whose diagonals are perpendicular and bisect each other
	square,kite parallelogram,square,rhombus,rectangle square,parallelogram square,rhombus square,rectangle

Question 5

5.	Two adjacent angles of a parallelogram KLMN are in the ratio 24 : 36. Find the measure of each of its angles.
	K = 74° , L = 107° , M = 70° , N = 109° K = 71° , L = 106° , M = 73° , N = 110° K = 70° , L = 110° , M = 71° , N = 109° K = 73° , L = 107° , M = 74° , N = 106° K = 72° , L = 108° , M = 72° , N = 108°

Question 6

6.	Which of the following is a regular polygon with four sides?
	rhombus square parallelogram rectangle trapezium

Question 7

7.	In parallelogram LMNO , diagonals   MO     and   LN     intersect at P . Then △MNO   ≅
	△NOL △LMP △NOP △LMN △OLM

Question 8

8.	In rhombus ABCD , diagonals   AC     and   BD     intersect at E . Then ∠BCD =
	∠CDA ∠DAB ∠ABE ∠ABC

Question 9

9.	In kite IJKL ,   IK     and   JL     are diagonals. Then ∠IML =
	∠KLI ∠KLJ ∠ILJ ∠IJK ∠IMJ

Question 10

10.	One of the diagonals of a rhombus is equal to one of its sides. Find the angles of the rhombus
	E = 58° , F = 122° , G = 59° , H = 121° E = 59° , F = 118° , G = 61° , H = 122° E = 60° , F = 120° , G = 60° , H = 120° E = 61° , F = 119° , G = 62° , H = 118° E = 62° , F = 119° , G = 58° , H = 121°

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