Definition of A circle
Explore this applet to draw a circle. Use it to help write a definition of a circle.
In this activity, we will use a pin, some string and a pencil to draw a circle.
You can control the length of the string by moving the black button right or left. Try moving the button. You should see that a line of points from the center of the circle to the point you moved the string to.
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.
Because the length of the string does not change size, which statement below do we know to be true.
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?
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?
What is the term we use to indicate any segment drawn from the center of any circle to any point on its circumference?
Select all that apply
- A