Circle Terminology (V2)

There are many vocabulary terms we use when talking about a circle. The following app was designed to help you clearly see and interact with each term. Explore these apps for a few minutes. As you go along, please answer the questions that follow.

Note: LARGE POINTS are moveable.

How would you describe or define a CIRCLE as a locus (set of points that meets specified criteria)?

How would you describe the term RADIUS without using the words "half" or "diameter" in your description?

Note: LARGE POINTS are moveable.

What does the term CHORD mean here in the context of a circle?

How would you describe the term DIAMETER without using the words "two", "double", or "diameter" in your description?

Note: LARGE POINTS are moveable.

How would you describe/define the term SECANT?

Note: LARGE POINTS are moveable.

What does it mean for a line to be TANGENT to a circle?