3. This is to certify that this project is done by by themselves during their training period from 30/11/2005 TO 21/12/2005 at S.M.V.HSS,Trivandrum CERTIFICATE

4. BY VISHNU.B JIJU. K. NAIR NITHINKUMAR.S.P VIPIN.R.S,X A PROPERTIES & CONSTRUCTION OF QUADRILATERAL OF S.M.V.HSS,THIRUVANANTHAPURAM

5. A Quadrilateral is a four-sided polygon with four angles. There are many kinds of quadrilaterals. E.g. The shape ABCD shown here is a quadrilateral. A line segment drawn from one. AC is a diagonal of quadrilateral ABCD, as is BD. vertex of a quadrilateral to the opposite vertex is called a diagonal of the quadrilateral

6. TYPES OF QUADRILATERALS

7. Opposite sides of a parallelogram are parallel and equal in length. Opposite angles are equal in size.

8. The symbol // represents ‘is parallel to’. AB is parallel to CD is written as AB//CD. Sides AB and CD are marked with identical arrows to show that AB //CD. Sides AC and BD are marked with identical arrows to show that AC //BD.

10. Opposite sides of a rectangle are parallel and equal in length. All angles are equal to 90°.

13. A trapezium has one pair of opposite sides parallel.parallel A regular trapezium has non-parallel sides equal and its base angles are equal

15. .  s. .   Students will be able to find relationship among angles,sides,and diagonals of parallelograms.  Students will be able to find characteristics of quadrilaterals that indicate that they are + parallelograms.  Students will know how to solve solve practical problems using the properties of parallelograms algebraic and coordinate problems using the properties of parallelograms.  Students will know how to.

17. WHEN TWO DIAGONAL & ONE ANGLE IS GIVEN