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point, line, and plane: bc they are only explained using examples and descriptions |
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location with neither shape nor size |
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made up of points and has no thickness or width |
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flat surface made up of points that extends infinitely in all directions |
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points that lie on the same line |
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points that lie in the same plane |
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set of points 2 or more geometric figures have in common |
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definitions/defined terms |
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explained using undefined terms and/or other defined terms |
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boundless, 3 demensional set of all points |
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betweeness of points (between) |
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for any 2 points a and b on a line, there is another point c b/w a and b if and only if a, b, and c are collinear |
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methods of creating these figures without the benefit of measuring tools |
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length of the segment with those points as its midpoints |
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the point halfway between the endpoints of the segment |
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any segment, line, or plane that intersects a segment at its midpoint |
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2 rays, have common endpoint |
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formed by two noncollinear rays that have common end point |
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point is in the interior if it doesnt lie on the angle itself and it lies on a segment with endpoints that are on the sides of the angle |
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point is on the exterior if it is neither on the angle nor in the interior of the angle |
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units angles are measured in |
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line segments where faces intersect |
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point where 3 or more edges intersect |
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polyhedron w/ 2 congruent faces |
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ray that divides an angle into two congruent angles |
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2 angles that lie in same plane and have a common vertex and a common side, bu no common interior points |
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pair of adjacent angles with noncommon sides that are opposite rays |
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2 nonadjacent angles formed by 2 intersecting lines |
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if any of lines contain any point in the interior of polygon |
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lines, segments, or rays that form right angles |
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closed figure formed by finite number of coplanar segments called sides |
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polygon for which there is no line that contains both side of polygon and a point in the interior of poygon |
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polygon in which all sides are congruent |
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polygon in which all angles are congruent |
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convex polygon that is both equilateral and equiangular |
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sum of lengths of sides of polygon |
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number of square units needed to cover surface |
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solid w/ all flat surfaces that enclose single region of space |
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