Mathematics Textbook of Competency Based Questions for Class IX>Chapter 8 - Quadrilaterals>Exercise>Q 69

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In a triangle, the perpendicular from the vertex to the base bisects the base. The triangle is

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Important Questions on Quadrilaterals

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Mathematics Textbook of Competency Based Questions for Class IX>Chapter 8 - Quadrilaterals>Exercise>Q 12

Constructed externally on the sides

A B, A C

of

△ A B C

are equilateral triangle

A B X

and

A C Y

. If

P, Q, R

are the mid-ponts of

A X, A Y

and

B C

respectively, then

△ P Q R

is

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Mathematics Textbook of Competency Based Questions for Class IX>Chapter 8 - Circles>Exercise>Q 40

The quadrilateral formed by joining the mid-points of the sides of a quadrilateral

P Q R S

, taken in a order, is a Rectangle, if

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Mathematics Textbook of Competency Based Questions for Class IX>Chapter 8 - Circles>Exercise>Q 43

The figure formed by joining the mid-points of the sides of a quadrilateral

ABCD

, taken in order, is a square only, if

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Mathematics Textbook of Competency Based Questions for Class IX>Chapter 8 - Circles>Exercise>Q 44

P

is any point on the side

B C

of a

∆ A B C . P

is joined to

A

. If

D

and

E

are the midpoints of the sides

A B

and

A C

, respectively.

M

and

N

are the midpoints of

B P

and

C P

, respectively, then quadrilateral

D E N M

is

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Mathematics Textbook of Competency Based Questions for Class IX>Chapter 8 - Circles>Exercise>Q 45

A B C D

is a trapezium in which

A B ‖ D C

.

M

and

N

are the midpoints of

A D

and

B C

respectively. If

A B = 12 cm, M N = 14 cm,

then

C D =

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Mathematics Textbook of Competency Based Questions for Class IX>Chapter 8 - Circles>Exercise>Q 51

If in a parallelogram diagonals bisect each other at right angles and are equal, then it is a

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Mathematics Textbook of Competency Based Questions for Class IX>Chapter 8 - Circles>Exercise>Q 52

The bisectors of the angle of a parallelogram enclose a

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Mathematics Textbook of Competency Based Questions for Class IX>Chapter 8 - Circles>Exercise>Q 58

The diagonals

A C

and

B D

of a rectangle

A B C D

intersect each other at

P

. If

∠ A B D = 50^{°}

, then

∠ D P C =