DIGITAL LIBRARY OF GLT SARAWATI BAL MANDIR, NEHRU NAGAR, BY DEEPESH SINGH CLASS 9th - F

2. • Introduction
• Types of Quadrilaterals
- Square
- Rectangle
- Rhombus
- Parallelogram
- Trapezium
- Kite

3. Quadrilateral just
means "four sides"
(quad means
four, lateral means
side). Any four-sided
shape is a
Quadrilateral. But the
sides have to
be straight, and it has
to be 2-dimensional.

5. A quadrilateral with all
congruent sides & each
angle a right angle is called
a Square.

6. Square has
equal sides.
Opposite
sides are
parallel.
Every angle is
right angle.
Diagonals are
congruent.
Diagonals
bisect each
other.
Each diagonal
is perpendicu-
lar bisector of
the other.

7. A quadrilateral with each
angle a right angle and
opposite side congruent is
called a .

8. • Every angle is right angle.
• Opposite sides are congruent.
• Opposites sides are parallel.
• Diagonals are congruent .
• Diagonals bisect each other.

11. A quadrilateral
which has opposite
sides parallel is
called a
parallelogram.

12. Diagonals
bisect each
other
Opposite
sides are
parallel
Opposite
angles are
congruent
Opposite
sides are
congruent

14. Only one pair of opposite side is
parallel.

15. KITE
A quadrilateral in which there are two
pairs of sides & each pair is made up of
adjacent sides that are equal in length
is called kite.

16. PROPERTIES
OF KITE