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# Types of Polygons

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Types of Polygons and Naming Polygons

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### Types of Polygons

1. 1. Types of Polygons
2. 2. 1. Simple and complex polygons • A simple polygon has only one boundary and the sides do not cross each other, otherwise it is a complex polygon.
3. 3. • Simple polygon • Complex polygon
4. 4. 2. Concave and convex polygons • A convex polygon has no internal angle more than 180º and if there are any internal angles greater than a straight angle, then it is a concave polygon.
5. 5. • Concave polygon • Convex polygon
6. 6. 3. Regular and Irregular polygons • Regular polygon is one whose sides are all equal and whose interior angles are all congruent. Thus, a regular polygon is both equilateral and equiangular. If, otherwise, the polygon is said to be irregular polygon.
7. 7. • Regular polygon
8. 8. • Irregular polygon
9. 9. • Irregular polygon
10. 10. NAMES OF POLYGONS
11. 11. • Polygons are named or classified according to their number of sides. A polygon with n sides is called n-gon.
12. 12. n (sides) Polygon 1 2 Digon Henagon 3 Triangle, trigon 4 Quadrilateral, tetragon 5 Pentagon 6 Hexagon 7 Heptagon 8 9 Octagon Nonagon, enneagon 10 Decagon