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Questions and Answers
What is the sum of interior angles in a polygon with 8 sides?
What is the sum of interior angles in a polygon with 8 sides?
What is the name of a polygon with 6 sides?
What is the name of a polygon with 6 sides?
What is the name of a polygon with all sides of equal length and all interior angles of equal measure?
What is the name of a polygon with all sides of equal length and all interior angles of equal measure?
What is the perimeter of a polygon with n sides?
What is the perimeter of a polygon with n sides?
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What is the name of a polygon with 7 sides?
What is the name of a polygon with 7 sides?
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Study Notes
Polygons
Names of Polygons
- A polygon is a 2D shape with at least 3 sides
- Names of polygons based on the number of sides:
- 3 sides: Triangle
- 4 sides: Quadrilateral
- 5 sides: Pentagon
- 6 sides: Hexagon +...and so on
Number of Sides
- A polygon with:
- 3 sides is a Triangle
- 4 sides is a Quadrilateral
- 5 sides is a Pentagon
- 6 sides is a Hexagon
- n sides is an n-gon
Interior Angles
- The sum of interior angles in a polygon with n sides is:
- (n-2) × 180°
- Each interior angle of a regular polygon with n sides is:
- (n-2) × 180° / n
Perimeter
- The perimeter of a polygon is the distance around the shape
- The perimeter of a polygon with n sides is the sum of the lengths of all its sides
Regular vs Irregular Polygons
- Regular Polygon: A polygon with all sides of equal length and all interior angles of equal measure
- Irregular Polygon: A polygon that is not regular, with sides and interior angles of different lengths and measures
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Description
Test your knowledge of polygons, including their names, number of sides, interior angles, perimeter, and types (regular and irregular).
