week ppt polygons and properties of polygons

polygons

1. SPELLING 1. POLYGON 2. EQUILATERAL 3. REGULAR 4. IRREGULAR 5. QUADRANGLE

2. POLYGONS A closed plane figure formed by three or more segments called sides . Each side intersects exactly two other sides, once at end point No two sides with a common end are collinear. Each line segment is called the sides of polygon and each endpoint where the sides meet is called the vertex of the polygon

3. CLASSIFICATIONS OF POLYGONS NUMBER OF SIDES NAME OF POLYGON CODE 3 TRIANGLE TRI = three 4 QUADRILATERAL Quad = four 5 PENTAGON Penta = five 6 HEXAGON Hexa = six 7 HEPTAGON Hepta = seven 8 OCTAGON Octa = eight 9 NONAGON Nona = nine 10 DECAGON Deca = ten 11 UNDECAGON Uno + deca = eleven 12 DODECAGON Duo + deca = twelve n n - gon

4. Irregular polygon Is a polygon whose sides and angles are not equal