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Kelso - Geometry Chapter 10

Vocabulary for Chapter 10: Area

Terms

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minor arc
is smaller than a semicircle.
height of a triangle
is the lenght of the altitude to the line containig that base.
arc lenght
is a fraction of a circle's circumfrence.
radius
is a segment that has one endpoint at the center and the other endpoint of the circle.
circumference
the distance around a circle.
radius of a regular polygon
is the distance from the circle to a vertex
congruent circles
are circles whose radii are congruent.
geometric probability
model in which you let points represent outcomes.
height of a trapezoid
is the perpendicular distance h between the bases.
pi
the ratio of the circumference of any circle to its diameter.
base of a triangle
is any of its side.
adjacent arcs
arcs of the samecirclethat have exactly one point in common.
circle
the set of all points the same distance from a given point.
central angle
is an angle whose vertex is the center of the circle .
congruent arcs
are arcs that have the same measure and are in the same circle or in congruent circles.
concentric circles
circles that lie in the same plane and have the same center.
apothem
is the perpendicular distance from the center to a side.
base of a parallelogram
is any of its side.
height of a parallelogram
is the lenght of an altitude.
diameter
is a segment that contains the center of a circle and has bothe endpoints in the circle.
major arc
is greater than a semicircle.
center of a circle
the middle of a circle.
altitude of a parallelogram
is a segment perpendicular to the line containingthat base, drawn from the side opposite the base.

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