Geometry
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44 terms
Terms | Definitions |
|---|---|
 collinear points | points on the same line |
| congruent line segment | Line segments that have the same length |
| point | a location in space that has no size |
| line | a set of points that form a stright path extending in oppsite directions without end |
| angle | figure formed by two rays with the same initial point |
| geometry | the pure mathematics of points and lines and curves and surfaces |
| noncolliear points | are points that do not lie on the same line |
| coplanar points | points all in one plane |
| intersection | the act of intersecting (as joining by causing your path to intersect your target's path), a place where two or more points meet |
| midpoint of a segment | The point that divides a segment into two congruent segments. |
| endpoints | points on the ends of line segments |
| plane | two dimensional flat surface, extends forever. |
| space | contains at least 4 points not in one line |
| obtuse angle | an angle between 90 and 180 degrees |
| straight angle | an angle of 180 degrees |
| side | formed by rays |
| opposite rays | two rays with the same initial point that go in opposite directions |
| vertex | the point of intersection of lines or the point opposite the base of a figure |
| bisector of a segment | a line, segment, ray, or plane that intersects the segment at its midpoint |
| acute angle | an angle less than 90 degrees but more than 0 degrees |
| congruent angles | Angles that have the same measure |
| right angle | the 90 degree angle between two perpendicular lines |
| vertical angles | angles are formed opposite of each other when two lines intersect |
| bisector of an angle | the ray that divides the angle into two congruent adjacent angles |
| perpendicular lines | two lines that meet and form a right angle |
| postulates | assumptions |
| noncoplaner points | points that are not in the same plane |
| segment | a part of a line with two endpoints |
| adjacent angles | Two angles with a common side, a common vertex, and no common points within the angles |
| supplementary angles | Two angles that add to 180ยบ are called |
| complementary angles | if the sum of two angles is 90% |
| degree | unit based to measure angles ( symbol ) |
| ray | Part of a line that has one endpoint and extends indefinitely in one direction. |
| perpendicular bisector | A line that is perpendicular to a segment at its midpoint. |
| corresponding angles | two angles in corresponding positions relative to two lines cut by a transversal |
| alternate exterior angles | Two nonadjacent exterior angles on opposite of the transversal. |
| same side-interior angles | interior angles on the same side of a transversal |
| exterior lines | The angle on the outside of a transversal. |
| skew lines | noncoplanar lines that do not intersect |
| parallel planes | planes that don't intersect |
| parallel lines | parallel lined |
| transversal | is a line that intersects each of two other coplanar lines in different points |
| interior angles | the angle inside of a transversal |
| alternate interior angles | two nonadjacent interior angles on opposite of the transversal |
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