1. 10.3 Areas of Regular Polygons
By Brit Caswell
10.3 Areas of Regular Polygons

2. A little vocab… Radius – From The center to the vertex Apothem – the
Perpendicular
Distance from the
Center to a side

3. Pg 629, #1 Find the measure of each marked angle on this
Regular pentagon.
Pg 629, #1

4. Theorem 10-6
The area of a regular polygon is half of the product of the apothem and the perimeter.

5. Pg 632, #14, TPS
Find the area of the regular polygon, given the apothem, a, and the side length, s. Nonagon, a=27.5 in, s=20 in.

6. Find the area.
Pg 632, #17

7. Pg 633, #32
A regular hexagon has a perimeter 120 m. Find its area.

8. Exit Ticket
Find the area of a regular octagon with an apothem 60.4in. and a side length 50in.