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### 23 Cards in this Set

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• Back
 point basic builing block in geometry no size or location line straight, continuous arrangement of points infinite # of points plane has length and width but no thickness collinear on the same line coplanar on the same plane noncollinear not on the same plane noncoplanar not on the same plane line segment 2 points and all the points between them endpoints of a segment point at either end of a segment are the 1st point of a ray congruent segments 2 or more segments that have the same measure or length midpoint point on a segment that is the same distance from both ends bisects to divide into 2 congruent parts ray a point on a line and all the points of the line that lie on one side of this point parallel lines lines on the same plane and do not intersect perpendicular lines lines that meet at 90 angles skew lines lines that are not on the same pland and do not intersect. right angle an angle that measures 90 acute angle measures less than 90 obtuse angle measures more than 90 but less than 180 complementary angles pair of angles whose sum is 90 supplementary angles pair of angles whose sum is 180 vertical angles formed by intersecting lines share common vertex no common sides linear pair of angles share vertex share common sides non common sides straight line