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If the diagonal of a quadrilateral bisect one another at right angles, then the quadrilateral is a 

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Important Questions on Quadrilaterals

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MATHEMATICS>Chapter 8 - Quadrilaterals>MULTIPLE CHOICE QUESTIONS>Q 4
In the below figure, M&N are the midpoints of sides AB&AC. If BC=15 cm, length of MN=?
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MATHEMATICS>Chapter 8 - Quadrilaterals>MULTIPLE CHOICE QUESTIONS>Q 5
In the figure, ABCD is a rhombus. If ∠A=80° , x=?
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MATHEMATICS>Chapter 8 - Quadrilaterals>MULTIPLE CHOICE QUESTIONS>Q 6
If three angles of a quadrilateral are 100°,75°&105°, then the measure of the fourth angle is
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MATHEMATICS>Chapter 8 - Quadrilaterals>MULTIPLE CHOICE QUESTIONS>Q 7

In the below figure, PQRS is a rectangle. If ∠RPQ=30°, x+y=?

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MATHEMATICS>Chapter 8 - Quadrilaterals>MULTIPLE CHOICE QUESTIONS>Q 8
ABCD is a quadrilateral and P,Q,R,S are midpoints of the sides AB,BC,CD,DA respectively. If BD=12 cm,QR=?
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MATHEMATICS>Chapter 8 - Quadrilaterals>MULTIPLE CHOICE QUESTIONS>Q 9
Which of the following is not a parallelogram?
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MATHEMATICS>Chapter 8 - Quadrilaterals>MULTIPLE CHOICE QUESTIONS>Q 10
ABCD is a rhombus, O is the intersecting point of diagonal OD=4 cm & OA=3 cm. Perimeter of rhombus is
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MATHEMATICS>Chapter 8 - Quadrilaterals>MULTIPLE CHOICE QUESTIONS>Q 11
A quadrilateral having only one pair of opposite sides parallel is a