enFICircle Vocabulary11
circle: set of all points equidistant from a given point called the center of the circle
chord: a segment whose endpoints are on the circle
diameter: distance across the circle through its center
radius: distance from the center to the point of the circle
secant: a line that intersects the circle at exactly two points
tangent: a line that intersects the circle exactly one time
point of tangency: where the tangent line intersects the circle
central angle: angle whose vertex is at the center of the circle
inscribed angle: one half times the intercepted arc
area of sector: section of the area of circle
arc length: section of the circumference of the circle
Circle Vocabulary
section of the circumference of the circle
section of the area of circle
angle whose vertex is at the center of the circle
a segment whose endpoints are on the circle
set of all points equidistant from a given point called the center of the circle
distance across the circle through its center
one half times the intercepted arc
where the tangent line intersects the circle
distance from the center to the point of the circle
a line that intersects the circle at exactly two points
a line that intersects the circle exactly one time