1. POLYGONS

2. THERE ARE MANY POLYGONS
SUCH AS
The triangle (3 sides);
The quadrilateral (4 sides);
The pentagon (5 sides);
The hexagon (6 sides);
The heptagon (7 sides);
The Octagon (8 sides);
The enneagon (9 sides);
The decagon (10 sides);
The dodecagon (12 sides);
And lastly the icoságono (20 sides).

3. NON CONVEX AND CONVEX
POLYGONS
A polygon is convex if all its interior angles have a measured
amplitude of less than 180 º.
convex polygon not convex

4. REGULAR POLYGONS
A polygon that has all sides and all internal angles matching
is said to be a regular polygon.
Eg:

5. Done by:
CATARINA
LEONOR 5ºD
2012
School 2.3
Azeitão