Standard 14 Vocab Flashcards
(22 cards)
Circle
the set of all points equal distance from a fixed point called the center (360 degrees).
Radius
a segment with endpoints at the center and the circle (half the diameter)
Circumference
the distance around the circle
C=2 pi r
Pi
3.14
Chord
a segment with both endpoints on the circle
Diameter
a chord that passes through the center of the circle
Concentric Circles
coplanar circles that have the same center
Central Angle
an angle with its vertex at the center of the circle
Arc
a portion of a circle defined by the endpoints
Intercepted Arc
the arch that an angle opens up to the circle
Inscribed Angle
an angle with its vertex on the circle and its sides are chords
Inscribed
when all a polygon vertices lie on the circle
Circumscribed
when a circle is drawn around a polygon
Semicircle
an arch with a measure of 180 degrees
Major Arc
an arch with a measure greater than 180 degrees
Minor Arc
an arch with a measure less than 180 degrees
Adjacent Arcs
two arcs by each that share an endpoint
Arc Measure
the degree measure of an arc
Arc Length
the length of arch in centimeters, inches, feet
Tangent Line
a line that intersects at exactly one point
Point of Tangency
the point at which the tangent line intersects the circle
Secant
a line that intersects the circle at two points
