Chapter 10 Definitions Flashcards
Tangent
A line that intersects a circle at exactly one point. This point is called the point of tangency/contact
Secant
A line that intersects a circle at exactly two points
Tangent segment
The part if the tangent line between the point of contact and a point outside the circle
Secant segment
The part of a secant line that joins a point outside the circle to the farther intersection point of the secant and the circle
External part of a secant segment
The part of the secant segment that joins the outside point to the nearer intersection point
Tangent circle
Circles that intersect each other at exactly one point
Externally tangent circles
Each of the tangent circles lie outside the other
Internally tangent circles
Each of the tangent circles lie inside the other
Common tangent
A line tangent to two circles
Common internal tangent
A common tangent that lies between the circles
Common external tangent
A common tangent that dies not lie between the circles
Inscribed angle
an angle whose vertex is on a circle and whose sides are determined by two chords
Tangent-chord angle
An angle whose vertex is on a circle and whose sides are determined by a tangent and a chord that intersect at the tangents point if contact
Chord-chord angle
An angle that is formed by two chords that intersect inside a circle but not at the center
Secant-secant angle
An angle whose vertex is outside a circle and whose sides are determined by two secants
