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27 Cards in this Set
- Front
- Back
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angle bisector
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A ray that starts at the vertex of an angle that divides the angle in to two angles of equal measure
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collinear points
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Points that lie on the same line.
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complementary angles
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Two angles whose measures have the sumof 90°
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concave polygon
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A polygon with one side that angles in
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congruent polygons
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Two polygons are congruent when the have the same size and same shape
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consecutive vertices
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"Consecutive: going in order
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convex polygon
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All the vertices are pointing out
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coplanar points
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Points that lie on the same plane.
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diagonals
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A line segment that connects any two non-consecutive vertices
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equiangular polygons
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A polygon whose angles are all the same measure
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equilateral polygons
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A ploygon whose sides are all the same length
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line segment
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Part of a line with two endpoints.
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linear pair of angles
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A pair of angles on the same line.
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midpoint
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A point that is equally distant from the two endpoints
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parallel lines
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Two or more lines that lie in the same plane and do not intersect
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perimeter
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"Sum of all the sides
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perpendicular lines
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Two lines that intersect to form a right angle
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point
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"The basic unit of geometry. It has no size
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polygon
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A closed geometric figure
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ray
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A part of a line that has a beginning but no end
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regular polygon
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A polygon whose angles and sides are all the same measure
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side
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Line segment connecting 2 vertices
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skew lines
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Lines that are not in the same plane and that do not intersect
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space
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Set of all points.
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supplementary angles
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Two angles whose measures have the sum of 180°
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vertex
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Angle of polygon
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vertical angles
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A pair of angles directly across from each other
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