Regular Polygons
Pacing:This lesson should take one to two class periods
Goal:The purpose of this lesson is to introduce the formulas to determine the areas of regular polgyons by defining
theapothem.
Additional Examples:
a. Find the area of a regular pentagon with 11.8 cm sides and a 9.2 cm apothem. 271.4 cm^2.
b. Find the area of a regular hexagon is its side length is 20[U+0080][U+009D]. 1039.23 in^2.
c. Find the area of the regular quadrilateral below. 32 mi^2Geometric Probability
Pacing:This lesson should take one class period
Goal:Students will apply the formula for general probability to geometric objects.
Extension!The probability formula can also be applied to areas. P=area of favorable outcometotal area. Use this formula for the
following additional examples.
Additional Examples:
- What is the probability of landing in the bulls-eye of the dartboard below? Probability= 1 .56%
1.10. Perimeter and Area