Angle Relationships in Circles
Central Angles
A central angle is an angle that originates from the center of a circle.
Inscribed Angles
An inscribed angle in a circle is an angle in a circle where the vertex is on the circle and its sides are chords.
Angles Inside a Circle when Secant Lines Intersect
A secant is a line that intersects a circle at two points. Look at the following image displaying the intersection of two secants inside a circle.
Angle Outside a Circle when Secant Lines Intersect
A secant is a line that intersects a circle at two points. Look at the following image displaying the intersection of two secants outside a circle.