geomtry curccle terms

What is a secan

a line that untersects the circle in 2 places

circle

A set of points equidistant from a given point in (the center.)

radius

a segment with endpoints at the center and on the circle.

chord

a segment with both endpoints on the circle.

diameter

a chord that passes through the center of the circle (2Xradius)

tangent

a line that intersects the circle though the center at exactly one place

point of tangency

the point where a tangent line intersects the circle.

central angle

an angle whose vertex is at the center and two sides that are radii

inscribed angle

an angle with a vertex on the circle, and two sides that are chords

arc

a portion of the edge of the circle defined by two sides thar are chords.

minor arc

an arc with a meserment less than 180 degrees

major arc

an arc with a measurement greater than 180 degrees.

semiclrcle

an arc that measures exactly 180 degrees, representing half of a circle. alaws = 180 degrees

area

A=pie R^2,