Slide 1

Lesson 10-1: Circles and Circumference Geometry CP Mrs. Mongold Slide 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=2r or C= d Slide 3 chord diameter radius A B C D E X Circle X Diameter- Radius- Chord- Slide 4 1.Name the circle 2.Name the radii 3.Identify a chord 4.Identify a diameter Slide 5 Slide 6 Slide 7 Slide 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. Slide 9 Slide 10