Term

Definition
 The middle. Such as the center of a circle or square. 


Term

Definition
 A straight line connecting two points on a curve.  Example: a straight line connecting two points on a circle's circumference would be a chord.  When the chord passes through the center of a circle it is called the diameter. 


Term

Definition
 The distance from the center to the edge of a circle  It is half of the circle's diameter 


Term

Definition
 A line that just touches a curve at one point, without cutting across it. 


Term

Definition
 A line that intersects two or more points on a curve.  If it only intersects one point it is called a tangent. 


Term

Definition
 Part of the circumference (edge) of a circle.  Or part of any curve. 


Term

Definition


Term
Concentric Circles
[image] 

Definition
Two or more circles which have the same center point 


Term

Definition
 A straight line going through the center of a circle connecting two points on the circumference. 

