Embedded Files
MATHEMATICS OBJECTIVE
Students will be able to:
Calculate the circumference, radius, or diameter of a circle.
Recognize the relationship between the circumference of a circle, diameter of a circle, and π.
ESSENTIAL UNDERSTANDING
The relationship between the circumference and diameter of a circle,
regardless of size, has a unique and constant ratio. This ratio is an
irrational number that is symbolized by π.
I can calculate the circumference, radius, and diameter of a circle.
I can recognize the relationship between the circumference and the diameter of a circle and pi.
PARTS OF A CIRCLE AND THEIR RELATIONSHIPS
The parts of a circle and their relationships are summarized in the diagram.
- The radius of a circle is half the length of its diameter.
- The ratio of the circumference of a circle to its diameter is π.
The value of π is approximately 3.14 or 22/7.
- Circumference is the distance around a circle. It can be calculated
using the formula C = πd or equivalently C = 2πr.
DIAGRAM DESCRIPTION
A circle has its circumference outlined in blue, a diameter drawn through
the center in orange, and a radius drawn from the center to the circle
in green. The center point is marked.
Page updated
Google Sites
Report abuse