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In geometry, a polygon (/ ˈ p ɒ l ɪ ɡ ɒ n /) is a plane figure made up of line segments connected to form a closed polygonal chain. The segments of a closed polygonal chain are called its edges or sides. The points where two edges meet are the polygon's vertices or corners. An n-gon is a polygon with n sides; for example, a triangle is a 3 ...
A regular polygon has all angles equal and all sides equal, otherwise it is irregular. Regular. Irregular. Concave or Convex. A convex polygon has no angles pointing inwards. More precisely, no internal angle can be more than 180°. If any internal angle is greater than 180° then the polygon is concave. ( Think: concave has a "cave" in it)
Review the term polygon and name polygons with up to 8 sides. Then, try some practice problems.
The properties of a polygon are listed below which help us identify a figure as a polygon: A polygon is a closed shape. It is made of line segments or straight lines. A polygon is a two-dimensional shape (2D shape) that has only two dimensions - length and width. A polygon has at least three or more sides.
Geometry (all content) 17 units · 180 skills. Unit 1 Lines. Unit 2 Angles. Unit 3 Shapes. Unit 4 Triangles. Unit 5 Quadrilaterals. Unit 6 Coordinate plane. Unit 7 Area and perimeter. Unit 8 Volume and surface area.
Polygons. Illustrated definition of Polygon: A plane shape (two-dimensional) with straight sides. Examples: triangles, rectangles and pentagons.
A polygon is a 2D shape with straight sides. To be a regular polygon all the sides and angles must be the same: Triangle - 3 Sides. Square - 4 Sides. Pentagon - 5 Sides. Hexagon - 6 sides. Heptagon - 7 Sides. Octagon - 8 Sides. Nonagon - 9 Sides.
