·
Draw
a Quadrilateral ABCD on colour chart Sheet .
· Cut such four Quadrilaterals on four different sheets.
· Mark ÐA as Ð1 , ÐB as Ð2 , ÐC as Ð3 and ÐD as Ð4 on each quadrilateral as shown in fig .
· Arrange all four angles of quadrilateral one from each colour at one point.
· What you observe ?
· It forms a complete angle i.e 3600
· This shows that sum of all angles of quadrilateral is 3600
· Cut such four Quadrilaterals on four different sheets.
· Mark ÐA as Ð1 , ÐB as Ð2 , ÐC as Ð3 and ÐD as Ð4 on each quadrilateral as shown in fig .
· Arrange all four angles of quadrilateral one from each colour at one point.
· What you observe ?
· It forms a complete angle i.e 3600
· This shows that sum of all angles of quadrilateral is 3600
