Theorem 6.19 - PowerPoint PPT Presentation

1 / 9
About This Presentation
Title:

Theorem 6.19

Description:

6.7 Circumference and Arc Length Theorem 6.19 pd The circumference C of a circle is C = ____ or C = _____, where d is the diameter of the circle and r is the radius ... – PowerPoint PPT presentation

Number of Views:201
Avg rating:3.0/5.0
Slides: 10
Provided by: DonH173
Category:
Tags: circle | theorem

less

Transcript and Presenter's Notes

Title: Theorem 6.19


1
Theorem 6.19
pd
The circumference C of a circle is C ____ or
C _____, where d is the diameter of the
circle and r is the radius of the circle.
2pr
pd
2pr
2
Use the formula for circumference
Example 1
Find the indicated measure.
  1. Circumference of a circle with radius 11 meters
  1. Radius of a circle with circumference 18 yards

Solution
3
Checkpoint. Complete the following exercise.
  1. Find the circumference of a circle with the
    diameter 23 inches.

4
Theorem 6.20
In a circle, the ratio of the length of a given
arc to the circumference is equal to the ratio of
the measure of the arc to 360o.
5
Find and use arc lengths
Example 2
Find the indicated measure.
  1. Arc length of AB

6
Find and use arc lengths
Example 2
Find the indicated measure.
Write equation.
Substitute.
Multiply each side by _____.
Use a calculator.
7
Checkpoint. Find the indicated measure.
  1. Arc length of AB

8
Checkpoint. Find the indicated measure.
9
Pg. 236, 6.7 2-24 even
Write a Comment
User Comments (0)
About PowerShow.com