Circles And Lines and Properties of Tangents Flashcards
A line segment that joins the center of the circle to a point on the circle
Radius
A set of all points a given distance away from a point (the center)
Circle
A line segment whose end points lie on the circle
Chord
A chord that contains the center of the circle
Diameter
A line that intersects the circle at 2 points
Secant
A line that intersects the circle a exactly 1 point
Tangent
Important Theorem 1
All radii in a circle are __________.
Congruent
Important Theorem 2
The diameter is equal to _________.
2 radii
Important Theorem 3
A radius perpendicular to a chord in a circle _______ the chord.
Bisects
Tangent Property 1
If a line is a tangent of a circle then it is ___________ to the radius drawn to the point of tangency.
Perpendicular
Tangent Property 2
Tangent segments to a circle from the same point will be _________ from the point to the point of tangency.
Congruent