Curriculum
Mathematics — First Preparatory
Unit 1: Numbers
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Unit 2: Algebra
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Unit 3: Statistics
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Text lesson
Polygons
Polygons
Definition and names of polygons
Definition and names of polygons
- A polygon is a closed figure made of straight line segments joined end to end, where the sides meet only at the vertices.
- A polygon is named according to its number of sides:
| Number of sides | Name of the polygon |
|---|---|
| 3 | Triangle |
| 4 | Quadrilateral |
| 5 | Pentagon |
| 6 | Hexagon |
| 7 | Heptagon |
| 8 | Octagon |
| 9 | Nonagon |
| 10 | Decagon |
- A regular polygon has all its sides equal and all its angles equal
- such as the square and the equilateral triangle.
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