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### 22 Cards in this Set

• Front
• Back
• 3rd side (hint)
 acute angle An angle whose measure is less than 90° and more than 0° 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 None convex polygon All the vertices are pointing out diagonals A line segment that connects any two non-consecutive vertices equilateral polygons A ploygon whose sides are all the same length linear pair of angles A pair of angles on the same line. perpendicular lines Two lines that intersect to form a right angle plane A flat surface that goes forever in all directions. point The basic unit of geometry. It has no size None polygon A closed geometric figure 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