Standard Form of a Circle Equation- where (h,k)represents the center and R is the radius
(x-h)squared + (y-k)squared = rsquared
Section 12-2
Properties of Tangents
Tangent- a line in the plane of the circle that intersects the circle in exactly one point
Theorem 12-2: If a line is tangent to a circle, then it is perpendicular to the radius drawn to the point of legacy
Theorem 12-3: If a line in the same plane as a circl e is the perpendicular to the radius at its endpoint on the circle, then the line is tangent to the circle
Circumscribed- around the outside
inscribed- inside
Theorem 12-4: Two segments tangent to a circle from a point outside the circle are congruent
