If it is a Regular Polygon Name, Sides, Shape, Interior Angle. Triangle (or Trigon), 3, regular triangle, 60°. Quadrilateral (or Tetragon), 4, regular quadrilateral. What do you call a 13 sided polygon? to be an officialset of names for polygons, uniformly derived from the Greek (after 4 sides). Number of sides, Name. 3. A polygon has as many angles as it has sides. For example, a triangle has 3 sides and 3 angles. A pentagon has 5 sides and 5 angles. An octadecagon has

## 100 sided polygon

Learn about the essential properties of plane shapes, polygons. Our easy to Example: For a pentagon (a five-sided shape) the calculation would be: 5 - 2 = 3. Each corner of a polygon where two sides intersect is called a vertex of the polygon. For example, a triangle is a polygon with 3 sides. There are also three. A polygon is a flat figure that is made up of straight lines and is enclosed. 3 sides - Triangle; 4 sides - Quadrilateral; 5 sides - Pentagon; 6 sides - Hexagon.

Sides, Names. 1, monogon, henagon. 2, digon, bigon. 3, trigon, triangle. 4, tetragon, quadrilateral. 5, pentagon. For polygons with 3 through 20 sides, simply add gon to the prefixes at the left ( although a trigon is more commonly called a triangle and a tetragon. Equilateral Triangle - An equilateral triangle is the only triangle that can be classed as a regular polygon because it 3 sides of equal length and 3 angles of equal.

Types of polygons, convex, concave, equilateral, equiangular, regular, irregular, Types of Polygons based on Number of Sides. Triangle. Triangle 3 sides. Definition and properties of a convex polygon. Note that a triangle (3-gon) is always convex. A convex polygon is the Also change the number of sides. Regular Polygon: Polygon in which all the sides of angle are same and all the Suppose a polygon consist of 3 sides then it is known as a triangle, but if a.

## 11 sided polygon

The number of diagonals in a polygon = 1/2 N(N-3) The number of Interior Angle - Angle formed by two adjacent sides inside the polygon. Exterior Angle. We generally classify polygons according to the number of sides (or vertices) they have. For example, a polygon with 3 sides or vertices is called a triangle;. Shape, # of Sides. Triangle, 3. Square, 4. Rectangle, 4. Quadrilateral, 4. Pentagon, 5. Hexagon, 6. Heptagon, 7. Octagon, 8. Nonagon, 9. Many of these shapes, or polygons, can be described as flat closed figures with 3 or more sides. Polygons are two-dimensional objects, not solids. Polygons are. 4-sided polygon. Square. A quadrilateral having all sides equal in length and forming right angles. Triangle. A 3-sided polygon (sum of internal angles = °). An interactive math lesson about identifying polygons based on the number of sides. Name, Sides, Angles. Triangle, 3, 3. Quadrilateral, 4, 4. Pentagon, 5, 5. Learn how to apply formulae for the interior and exterior angles of a polygon and The number of triangles in each polygon is two less than the number of sides. Polygons - 2D shapes with straight sides e.g. triangle, rectangle. Regular Polygons NUMBER OF SIDES, NAME OF POLYGON. 3, triangle. 4, quadrilateral. \times 3 = ^\circ. The number of triangles in each polygon is two less than the number of sides. The formula for calculating the sum of interior angles is. Calculator online for a regular polygon of three sides or more. When the number of sides, n, is equal to 3 it is an equilateral triangle and when n = 4 is is a .