Equation of a Circle
For (x - 2)2 + (y - 4)2 = 16, the center of the circle is ____.
(2 , 4)
A central angle has it's vertex at the ____ of the circle.
center
What line goes from the center of a circle to the edge of the circle?
radius
The one spot where a tangent line touches a circle is called the point of ____.
tangency
For (x - 2)2 + (y - 4)2 = 16, the radius has a length of ____.
4
An inscribed angle has its vertex at the ____ of a circle.
edge
What line goes from one side of a circle, through the center of the circle, and to the edge of the circle.
diameter
The measure of the arc enclosed by a diameter is ____ degrees.
180
What is the equation of a circle with center at (3 , 5) and radius with a length of 6?
(x - 3)2 + (y - 5)2 = 36
A central angle is ____ its enclosed arc.
equal to
What line goes from one edge of a circle to another point on the edge of the circle, without passing through the center of the circle?
chord
If two tangents have a common endpoint, then the the angle formed by the tangents and the central angle will add up to ___ degrees.
180
What is the radius of a circle with a diameter of 10?
5
An inscribed angle is ___ of its enclosed arc.
half
What is a curved line that is part of the edge of a circle?
arc
If two chords are equal in length, then their central angles will be ____.
equal
What is the diameter of a circle with the equation of (x - 2)2 + (y - 4)2 = 64
16
The enclosed arc of an inscribed angle is ___ the measure of the inscribed angle.
double
What is the space inside a central angle of a circle called?
sector area
Two tangents with a common endpoint will be ___ in length.
equal