Parts of a Circle

Intro to Circles Watch this video and copy the notes on paper. If you have a printer, you may print a copy of this note page from the link in your google classroom. Chord Any straight line linking two points on a circle`s circumference, but may not pass through its center. Radius Any straight line from the center of a circle to its circumference. Diameter the distance measured from one point on a circle to another going through the center Circumference The total length of the outside edge (perimeter) of a circle. Identify the line segment that represents the radius. PQ RS PS QS Identify the line segment that represents the diameter. PQ RS PS QS Identify the line segment that represents the radius. DB AB AD CD Identify the line segment that represents the diameter. DB AB AD CD Given the radius, calculate the measurement of the circle's diameter. 3yd 9yd 6yd Given the diameter, calculate the measurement of the circle's radius. 46 in 184 in 92 in Parts of a circle Calculate each circle's measurement for radius and diameter. 18 in 36 in 19 ft 38 ft 6 yd 12 yd Circle Song Listen to this to help learn the parts of a circle, and the formulas. Circle Song Funny Song to help you memorize Pi Listen to this for a fun way to learn the first 25 digits of pi. Pi Song