where students teach themselves
A comprehensive geometry curriculum
Geometry for School and Home
Activity 3.8
Assignment 3.9
Previous
Next
Assignment 8.11
Areas of Equilateral Triangles and Regular Hexagons
Objective
Develop and apply theorems and formulas to find areas of equilateral triangles and regular hexagons.
About Geometry Worksheet Assignment 8.11:
Assignment 8.11 is the development and application of area formulas for equilateral triangles and regular hexagons.
Prerequisite Skills: Find lengths of the legs in 30-60 right triangles (Assignment 7.9). Find area of triangles (Assignment 8.6).
1
Theorems: The height of an equilateral triangle equals 2 the length of the side multiplied by 3 .
2
The formula for the area of an equilateral triangle is: A = s 3 (A is area; s is the length of a side)
4
2
The formula for the area of a regular hexagon is: A = 6 s 3 (A is area; s is the length of a side)
4