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Basic figures in geometry which cannot be defined by using other figures |
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Names a location and has no size. It is represented by a dot. |
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A straight path that has no thickness and extends forever |
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A flat surface that has no thickness and extends forever. |
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Points that lie on the same line |
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Points that lie in the same plane |
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The part of a line consisting of two points and all points between them |
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A point at one end of a segment or the starting point of a ray |
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A part of a line that starts at an endpoint and extends forever in one direction |
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Two rays that have a common endpoint and form a line |
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A statement that is accepted as true without proof |
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A point corresponds to one and only one number on the ruler |
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The absolute value of difference of the coordinates |
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The distance between A and B |
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Segments that have the same length |
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A way of creating a figure that is more precise |
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The point that bisects or divides, the segment into two congruent segments. |
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Any ray, segment, or line that intersects a segment at its midpoint. |
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A figure formed by two says, or sides |
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A common endpoint of an angle |
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The set of all points between the sides of the angle |
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The set of all points outside the angle |
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Measures greater than 0° and less than 90° |
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Measures greater than 90° and less than 180° |
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Formed by two opposite rays and measures 180° |
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Angles that have the same measure |
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A ray that decides an angle into two congruent angles |
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Two angles in the same plane with a common vertex and a common side, but no common interior points |
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A pair of adjacent angles whose noncommon sides are opposite rays |
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Two angles whose measures have a sum of 90° |
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Two angles whose measures have a sum of 180° |
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Two nonadjacent angles formed by two intersecting lines |
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The sum of the side lengths of the figure |
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A segment form a vertex that forms a right angle with a line containing the base |
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A segment that passes through the center of the circle and whose endpoints are on the circle |
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A segment whose endpoints are the center of the circle and a point on the circle |
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The distance around the circle |
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The ratio of a circle's circumference to its diameter |
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A plane that is dicided into four regions by a horizontal line (x-axis) and a vertical line (y-axis) |
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A plane that is dicided into four regions by a horizontal line (x-axis) and a vertical line (y-axis) |
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The two sides that form the right angle |
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The side across from the right angle that stretches from one leg to the other |
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A change in the position, size, or shape of a figure |
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A transformation across a line, called the line of reflection |
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A transformation about a point P, called the center of rotation. Each point and its image are the same distance from P. |
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A transformation in which all the points of a figure move the same distance in the same direction |
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