Parts of a Circle - Concept

Concept Concept (1)

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A chord is a line segment whose endpoints are on a circle. A diameter is a chord that passes through the center of a circle. Another one of the parts of a circle is a radius, which is a line segment with one endpoint at the center and one endpoint on the circle. Congruent circles have congruent radii (the plural of radius). Concentric circles have the same center. A central angle has a vertex on the center and endpoints on the circle.

Sample Sample Problems (1)

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Parts of a Circle - Problem 1
Problem 1
How to classify arcs and define chords and tangents.