5 Questions
What is the sum of interior angles in a polygon with 8 sides?
1260°
What is the name of a polygon with 6 sides?
Hexagon
What is the name of a polygon with all sides of equal length and all interior angles of equal measure?
Regular Polygon
What is the perimeter of a polygon with n sides?
The sum of the lengths of all its sides
What is the name of a polygon with 7 sides?
Heptagon
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
Test your knowledge of polygons, including their names, number of sides, interior angles, perimeter, and types (regular and irregular).
Make Your Own Quizzes and Flashcards
Convert your notes into interactive study material.
Get started for free
