Tangents
A line perpendicular to a radius at the point of contact
tangent
Longest chord in a circle
diameter
Central angle measure equals the ______ measure
arc
Region between two radii and an arc
sector
Vertices lie on the circle
Inscribed polygon
Max intersections of a line and circle
2
Two tangents from the same external point are congruent
Congruent
A diameter perpendicular to a chord does this
BIsects a chord
Inscribed angle equals _____ its arc
half
Region between chord and arc
segment
A polygon whose sides are tangent to the circle
Circumscribed polygon
Diameter is 14, find radius
7
A tangent touches the circle at how many points
1
Equal arcs subtend _____ chords
Equal
Arc less than 180 degrees
minor
Two circles with equal radii
congruent
Multiple polygons can be drawn around a circle. T/F
True
Two intersecting circles form a common
chord
Tangents at the ends of diameters are _____
parallel
Chords closer to the center are _____
longer
Arc greater than 180 degrees
major
Circles sharing the same center
concentric
A polygon touching the circle at every side is also called
Tangential
Aligned centers of congruent circles make them
coincide
A tangent is always _______ to the radius
perpedicular
A chord through the center is called a _____________
diameter
The greater chord subtend the ______ minor arc
greater
Distance around a circle
Circumference
All sides equal and all angles equal polygon
Regular polygon
Angle formed by two radii
central angle