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# Geo_6.1

### Vocabulary for Geometry_6.1

TermDefinition
area The number of square units needed to cover a surface.
base of a parallelogram Any side of a parallelogram.
base of a triangle Any side of a triangle.
circumference The distance around a circle.
concave polygon A polygon for which there is a line containing a side of the polygon that also contains a point in the interior of the polygon.
equiangular polygon A polygon for which there is a line containing a side of the polygon that also contains a point in the interior of the polygon.
equilateral polygon A polygon for which there is a line containing a side of the polygon that also contains a point in the interior of the polygon.
height of a parallelogram The length of an altitude of a parallelogram.
height of a trapezoid The perpendicular distance between the bases of a trapezoid.
height of a triangle The length of an altitude drawn to a given base of a triangle.
n-gon A polygon with n sides.
perimeter The sum of the lengths of the sides of a polygon.
polygon A closed figure formed by a finite number of coplanar segments called sides such that the sides have a common endpoint are noncollinear and each side intersects exactly two other sides, but only at their endpoints, called the vertices.
regular polygon A convex polygon in which all of the sides are congruent and all of the angles are congruent.
sector of a circle A region of a circle bounded by a central angle and its intercepted arc.
segment of a circle The region of a circle bounded by an arc and a chord.
vertex of a polygon The vertex of each angle of a polygon.
Created by: mtoepper