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Definition
| Two rays sharing a common endpoint. |
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Definition
| An angle that has measure less than 90°. |
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Definition
| Two angles in a plane which share a common vertex and a common side but do not overlap. |
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Definition
| The surface included within a closed figure, measured by the number of square units needed to cover the surface. |
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Definition
| Point B is between points A and C if it is on the line segment connecting A and C. |
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Definition
| A line segment, line, or plane that divides a geometric figure into two congruent halves. |
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Definition
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Term
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Definition
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Term
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Definition
| If the sum of the measures of two angles is 90°. |
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Term
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Definition
| A concave figure is a set of points some of whose chords include points that are in the set. |
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Term
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Definition
| A three dimensional figure with a single base tapering to an apex. The base can be any simple closed curve. |
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Definition
| Exactly equal in size and shape. |
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Term
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Definition
| An additional geometric figure that is constructed to assist in solving a problem or producing a proof. |
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Term
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Definition
| A set of points any of whose chords do not include any point that is not in the set. |
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Term
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Definition
| The pair of numbers giving the location of a point (ordered pair). |
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Term
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Definition
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Term
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Definition
| A three-dimensional geometric figure with parallel congruent bases. |
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Term
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Definition
| A unit of angle measure equal to of a complete revolution. |
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Term
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Definition
| A line segment between two points on the circle or sphere which passes through the center. |
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Term
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Definition
| A straight line along which two faces of a solid meet. |
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Term
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Definition
| A planar surface of a solid figure. |
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Term
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Definition
| The side of a right triangle opposite the right angle. |
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Term
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Definition
| The geometric figure formed by two points. |
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Term
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Definition
| A pair of adjacent angles formed by intersecting lines. |
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Term
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Definition
| All points between two given points (including the given points themselves). |
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Term
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Definition
| The point halfway between two given points. |
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Term
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Definition
| An angle that has measure more than 90° and less than 180°. |
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Term
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Definition
| Two rays that are opposite of eachother. |
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Term
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Definition
| Two or more straight coplanar lines that do not intersect. |
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Term
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Definition
| The distance around the outside of a plane figure. |
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Term
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Definition
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Term
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Definition
| A flat surface extending in all directions. |
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Term
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Definition
| A statement accepted as true without proof. |
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Term
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Definition
| The geometric figure formed at the intersection of two distinct lines. |
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Term
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Definition
| A closed plane figure for which all sides are line segments. |
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Term
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Definition
| A solid with no curved surfaces or edges. |
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Term
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Definition
| A solid with parallel congruent bases which are both polygons. |
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Term
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Definition
| A set of logical arguments used to deduce or prove a mathematical theorem from a set of axioms. |
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Term
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Definition
| A polyhedron with a polygonal base and lateral faces that taper to an apex. |
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Term
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Definition
| A line segment between the center and a point on the circle or sphere. |
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Term
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Definition
| A part of a line starting at a particular point and extending infinitely in one direction. |
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Term
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Definition
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Term
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Definition
| Lines in three dimensional space that do not intersect and are not parallel. |
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Term
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Definition
| A three dimensional solid consisting of all points equidistant from a given point. |
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Term
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Definition
| Two angles that add up to 180°. |
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Term
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Definition
| An assertion that can be proved true using the rules of logic. |
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Term
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Definition
| If the denominator of a fraction is 0, then the fraction is undefined. |
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Term
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Definition
| A corner point of a geometric figure. |
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Definition
| Angles opposite one another at the intersection of two lines. |
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Term
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Definition
| A pair of angles is said to be vertical. |
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