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CHS geometry 2015-2016--vocabulary list 4 definitions
definition flashcards to accompany vocabulary list 4
18
Mathematics
10th Grade
05/09/2016

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Term
polygon
Definition
Iff a plane figure is 1) closed 2) formed from three or more segments such that each segment intersects exactly two other segments, one at each endpoint, and 3) no two segments with a common endpoint are collinear, then the plane figure is a(n) __________.
Term
vertex (of a polygon), vertices
Definition
Iff a point is the intersection of two sides of a polygon, then the point is a(n) __________ of the polygon.
Term
diagonal (of a polygon)
Definition
Iff a segment connects two non-adjacent vertices of a polygon, then the segment is a(n) __________ of that polygon.
Term
convex (polygon)
Definition
Iff every diagonal of a polygon passes only through the polygon’s interior, then the polygon is a(n) __________ polygon.
Term
concave (polygon)
Definition
Iff at least one diagonal of a polygon passes through the polygon’s exterior then the polygon is a(n) __________ polygon.
Term
equiangular (polygon)
Definition
Iff all the interior angles of a polygon have the same measure, then the polygon is a(n) __________ polygon.
Term
equilateral (polygon)
Definition
Iff all the segments that form a polygon have the same measure, then the polygon is a(n) __________ polygon.
Term
regular (polygon)
Definition
Iff a polygon is both equiangular and equilateral, then the polygon is a(n) __________ polygon.
Term
center (of a regular polygon)
Definition
Iff a point is equidistant from all vertices of a regular polygon, then the point is the __________ of the regular polygon.
Term
central angle (of a regular polygon)
Definition
Iff an angle’s vertex is the center of a regular polygon, and the angle’s sides pass through adjacent vertices of the polygon, then the angle is a(n) __________ of that regular polygon.
Term
interior angle (of a polygon)
Definition
Iff an angle’s vertex is a vertex of a polygon, and if the angle’s sides are segments that share that vertex, then the angle is a(n) __________ of the polygon.
Term
exterior angle (of a convex polygon)
Definition
Iff an angle forms a linear pair with an interior angle of a convex polygon, then it is a(n) __________ of the convex polygon.
Term
quadrilateral
Definition
Iff a polygon has four sides, then the polygon is a(n) __________.
Term
pentagon
Definition
Iff a polygon has five sides, then the polygon is a(n) __________.
Term
hexagon
Definition
Iff a polygon has six sides, then the polygon is a(n) __________.
Term
heptagon
Definition
Iff a polygon has seven sides, then the polygon is a(n) __________.
Term
octagon
Definition
Iff a polygon has eight sides, then the polygon is a(n) __________.
Term
n-gon
Definition
Iff a polygon has n sides, then the polygon is a(n) __________.
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