1. Std- 9th , Subject- Geometry
Teacher name- Sou.Acharya Anjali Anil
School name- shree chatrapati shivaji vidhyalay ,wavanje,Tal-Panvel Dist-Raigad

2. QUADRILATERALS

3. TYPES OF QUADRILATERAL

4. Parallelogram C D A B

5. Rectangle
S R
P Q

6. Rhombus
S R
P Q

7. Square p N
L M

8. Trapezium A D C B

9. Isosceles trapezium
S R
P Q Q

10. s
kite
p R Q

11. Properties of QuadrilaterilateralsC
Angle sum property of a quadrillateral.
The sum of the measures of all angles of a quadrillateral is 360 degree. A B

12. PARALLELOGRAM
1) The opposite sides of parallelogram are parallel and congruent.
2)The opposite sides of a parallelogram are congruent.
3) The opposite angles of a parallelogram are congruent.
4) The diagonals of a quadrillateral bisect each other .

13. RECTANGLE 1) Diagonals of a rectangle are congruent.
2)Each angle is a right angle.
3) opposite sides of rectangle are same.

14. RHOMBUS 1) All sides of rhombus are congruent
2) Diagonals of a rhombus are perpendicular bisectors of each other at right angle.

15. SEQUARE 1) Every sequare is a rhombus.
2) Diagonals of a sequare are congruent and perpendicular bisectores of each other.
3)Each angle of a sequare is 90 degree.

16. TRAPEZIUM 1) Only one pair of opposite sides is parallel.
2) Line segment joining mid-points of non-parallel sides is
* Parallel to its parallel sides.
* Half the sum of the lengths of its parallel sides. D C
F F E F A B

17. Terms related to a quadrilateralC
D ) vertices---The points A,B,C,D
2) sides—seg AB, Seg BC, Seg CD,
Seg.DA
3)Angles -<ABC,<BCD,<CDA,<DABA
4) Diagonals– SegAC,SegDB
5)Adjacent angles- <A&<D,<A&<B,<D&<C , <B&<C
6)Opposite Angles--- <A&<C, <B&<D B A

18. THANKS!!!