1. Lesson 10-1: Circles and Circumference
Geometry CP
Mrs. Mongold

2. Name a circle by the letter at the center of the circle
Diameter- segment that extends from one point on the circle to another point on the circle through the center point
Radius- segment that extends from one point on the circle to the center point
Chord- segment that extends from one point on the circle to another point on the circle
Diameter=2 x radius (d=2r)
Circumference: the distance around the circle
C=2πr or C= πd

3. Circle X
Diameter-
Radius-
Chord- A
chord B
diameter E C X
radius D

4. Name the circle
Name the radii
Identify a chord
Identify a diameter

8. Find the circumference of a circle to the nearest hundredth if its radius is 5.3 meters.
b. Find the diameter and the radius of a circle to the nearest hundredth if the circumference of the circle is 65.4 feet.