Aklan State University
College of Teacher Education
Graduate Studies Program
Banga, Aklan
POLYGONS
Objectives
- Define,
identify and illustrate different kinds of polygons according to the number of
sides
- Identify
the parts of a regular polygon: interior, exterior and the points on the
polygon itself.
- Differentiate
convex from non-convex polygons.
What is a polygon?
- A closed plane figure formed by fitting together
segments end to end with each segment intersecting exactly two others
- Each line segment is called a side of a polygon.
- Each endpoint where the sides meet is called the
vertex of the polygon.
- Classified according to the number of its sides.
Classification of Polygons
How to name a polygon?
- To
name a polygon, the vertices are listed in consecutive order.
What are the parts of a polygon?
- Interior of the polygon
- Exterior of the polygon
- Points on the polygon itself
What is the difference between convex and concave polygons?
- A
polygon is convex if no diagonal is in the exterior of the polygon.
- A
polygon is concave if at least one diagonal is in the exterior of the
polygon.
