Circles Examples

You're standing on a circle and you're 3 feet from the center point of the circle. If you move to another point on the circle, how far will you be from the center point?

You will be 3 feet from the center no matter where you stand on the circle. The radius is the distance from the center of a circle to any point on the circle. In this case, the circle's radius is 3 feet.

Label each line on the circle below.

Line A is a tangent line, it intersects the circle in just one place.

Line B is a radius, it goes from the center to a point on the circle.

Lines C and D are chords because they connect two points on the circle.

Line D is a diameter because it is a chord and it passes through the center of the circle.

Is this statement true or false?
All circles are similar.

It is true, all circles are similar. All circles are the same shape, but they can be different sizes.