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### 27 Cards in this Set

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