Circles and their properties
Arc: Segment of the circumference of a circle. Measures the same angle measurement of its central angle.
Central Angle: Angle created by 2 radii
Chord: A segment from one point of a circle to another point of a circle
Circumference: Perimeter of a circle
Diameter: A segment from one point of a circle to another point of a circle through the center. Longest chord of a circle and twice the radius
Inscribed Angle: An angle with a vertex on a point of the circle
Pi: The ratio of the circumference and diameter of a circle
Radian: An angle measurement of an arc that has a length of the radius
Radius: A segment from the center of a circle to any point on the circle
Sector: portion of the area of a circle
Unit circle: A circle with a radius of 1
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