Explore this applet to draw a circle. Use it to help write a definition of a circle.
[size=200][b][color=#980000]In this activity, we will use a pin, some string and a pencil to draw a circle. [br][/color][/b][/size]
[b][color=#980000][size=150]You can control the length of the string by moving the black button right or left. Try moving the button[/size]. You should see that a line of points from the center of the circle to the point you moved the string to. [/color][/b]
[b][color=#980000][size=150]Now click on the play button in the bottom left hand corner. You should see the pencil draw a line of points around the pin. [/size][/color][/b]
[color=#980000][b]Because the length of the string does not change size, which statement below do we know to be true. [/b][/color]
[b][color=#980000][size=150]What is the term we use to indicate a line drawn by connecting points that are equally distant in length from any given center point? [/size][/color][/b]
The name used to indicate a line drawn by connecting points that are equally distant in length from any given center point is[b] circumference. [/b]
[b][color=#980000][size=150]Click on "Clear Trace" and set the length of the string to 2.9. Click on the play button to create a circle. What is the length of any segment made by connecting a point on the circumference of the circle to the center of the circle marked by the red pin? [/size][/color][/b]
What is the term we use to indicate any segment drawn from the center of any circle to any point on its circumference?