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Definition
| An angle that measures greater than 0 degrees and less than 90 degrees. |
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Definition
| Two angles in the same plane with a common vertex and a common side, but no common interior points. |
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Definition
| A figure formed by two rays with a common endpoint. |
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Definition
| A ray that divides an angle into two congruent angles. |
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Definition
| Marks used on a figure to indicate congruent angles. |
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Term
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Definition
| Given three points A, B, C, B is between A and C if and only if all three of the points lie on the same line and AB+BC=AC. |
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Term
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Definition
| To divide into two congruent parts. |
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Definition
| Points that lie on the same line. |
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Definition
| The sum of the measures of an angle and its complement is 90 degree. |
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Term
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Definition
| Two angles whose measures have a sum of 90 degrees. |
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Definition
| Having the size and shape. |
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Definition
| Angles that have the same measure. |
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Definition
| Two segments that have the same length. |
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Definition
| A method of creating a figure that is considered to be mathematically precise. figures may be contructed by using a compass and straightedge, geometry software, or patty folding. |
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Definition
| A number used to identify the location of a point. On the number line, one coordinate is used. On the cooridnate plane, two coordinates are used, called the x-coordinate and the y-cooridnate. |
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Term
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Definition
| A plane that is divided into four regions by a horizontal line called the x-axis and a vertical line called the y-axis. |
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Term
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Definition
| Points that lie in the same plane. |
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Definition
| A unit of angle measure; on degree is 1/360 of a circle. |
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Term
| Distance between two points |
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Definition
Teh absolute value of the difference of the coordinates of the points.
d=√(x2-x1)2 + (y2-y1)2 |
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Definition
| A point at an end of a segment or the starting of a ray. |
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Definition
| The set of all points outside a polygon. |
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Definition
| The length of an altitude of the figure. |
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Definition
| A segment from a vertex that forms a right angle with a line containing the base. |
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Definition
| The side opposite the right angle in a right triangle. |
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Definition
| A shape that results from a transformation of a figure known as the preimage. |
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Definition
| The set of all points between the sides of an angle. |
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Definition
| The distance between the two endpoints of a segment. |
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Term
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Definition
| An undefined term in geometry, a line is a straight path that has no thickness and extends forever. |
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