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SAI International School
                                                        CLASS - VIII

                  Mathematics
                  CHAPTER-3: Understanding Quadrilaterals             Lesson Notes-1




                  SUBTOPIC : Introduction, Polygons and classification of polygons


                  Plane Curve

                  We get a curve by joining the number of points without lifting the pencil is a plane curve.
                  It could closed or open curve.
                  Open Curve









                  Closed Curve










                  Simple Curve: A simple curve has only one boundary, and it doesn't cross over itself.

                  Complex Curve: A complex curve intersects itself.

                  Polygon: A simpleclosed curve which is made up of linesegmentsonly is called
                  as Polygon.












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