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### 18 Cards in this Set

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 a location that has no size; named by a capital letter point defined as the set of all points space a series of points that extends in two opposite directions without end; named by any two points or with a single lowercase letter line on the same line collinear a flat surface that has no thickness; named by either a single capital letter or by at least three of its noncollinear points plane points and lines in the same plane coplanar an accepted statement of fact postulate (axiom) through any two points there is: exactly one line if two lines intersect, then they intersect in: exactly one point if two planes intersect, then they intersect in: exactly one line through any three noncollinear points ther is: exactly one plane the part of a line consisting of two endpoints and all points between them; named by endpoints segment the part of a line consisting of one endpoint and all the points of the line on one side of the endpoint; named by the endpoint and another point ray lines that do not intersect parallel lines lines that do not intersect but are noncoplanar skew lines measure of angle is greater than 0 but less than 90 acute angle measure of angle equals 90 right angle measure of angle is greater than 90 but less than 180 obtuse