Properties of Quadrilaterals

2. Quadrilaterals
Srivatsal Narayan
Class :-8 E
Roll no. 27

3. What are Quadrilaterals
Any closed four sided figure can be termed as a
quadrilateral.

4. Quadrilaterals can broadly be classified
into two types:-
Types of
Quadrilaterals
These quadrilaterals have
an angle more than 180
degrees .
Concave Quadrilateral
Convex Quadrilaterals
These quadrilaterals
have all angles less than
180 degrees .

5. Types of Quadrilaterals
Concave Quadrilateral Convex Quadrilaterals

6. Types of Quadrilaterals
Types of
Quadrilaterals
Scalene
Quadrilaterals
Trapezium
Parallelogram
Kite
Isosceles
Trapezium
Trapezium
Parallelogram
Square
Rectangle
Rhombus

8. Properties of Parallelograms
• Opposite sides are parallel .
• Opposite angles are parallel .
• Diagonals are bisectors of each other .
• Adjacent angles are supplementary .

9. Properties of Rhombus
• All sides are equal .
• Diagonal bisect each other at 90 degrees .
• Diagonals bisect each other .

10. Properties of Squares
• All sides are equal .
• All angles of a square are 90 degrees .
• Diagonals of a square bisect each other .

11. Properties of Rectangles
• Opposite angles of rectangle are parallel and
equal .
• Each angle of rectangle are 90 degrees .

13. Properties of Trapezium
• Opposite sides of trapezium are parallel to
each other .

14. Properties of Isosceles Trapezium
• Opposite angles are supplementary .
• Diagonals of isosceles trapezium are equal .
• Adjacent angles are supplementary .

15. Properties of Kite
• Adjacent sides are equal .
• Angles between unequal sides are equal .
• Diagonals of a kite intersect each other at 90
degrees.

16. Grouping Based on Congruent Sides and
Parallel Sides

17. SUMMARY

18. THANK YOU