This document provides an overview of properties and formulas for calculating measurements of regular polygons, including perimeter, central angle, apothem, interior angle, sum of interior angles, area, and diagonals. It also includes a sample problem asking to find these values for specific regular polygons when given the length of one side.

1. SOLID MENSURATION
MATH005A
Lecture #4
Properties of Regular Polygon
• Perimeter
• Central angle
• Apothem
• Interior angle
• Sum of interior angle
• Area
• Diagonal

2. PERIMETER

3. CENTRAL ANGLE

4. APOTHEM

5. INTERIOR ANGLE

6. AREA

7. DIAGONAL

8. Sample Problem
1. Find the area, diagonals, sum of the interior angles,
interior angles, central angle and apothem of the following
regular polygon if one side measures 3cm.
a. octagon
b. pentagon
c. undecagon
d. heptagon