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Chapter 1 - Tools of Geometry
Basic geometry vocabulary that you MUST know.
Terms in this set (34)
A location in space that has no length, width, or depth.
Made up of an infinite number of points. Has infinite length, but no thickness or width.
A flat surface that has infinite length and width, but no depth.
A part of a line between two points.
Points on the same line or line segment.
Part of a line that starts at one point and goes infinitely in one direction.
Formed by two rays that meet at an endpoint or formed by two intersecting lines. Measured in degrees.
The endpoint where two rays meet to form an angle.
An angle that measures 90 degrees.
An angle that measures 180 degrees.
An angle that measures between 0 and 90 degrees.
An angle that measures between 90 and 180 degrees.
Two or more figures that are the same size and shape. Sides are equal in length and angles are equal in measure.
Cuts a line segment into two congruent segments.
Cuts an angle into two congruent angles.
Angles that share only one side and a vertex, but have no common interior points.
Two adjacent angles formed by the intersection of two lines. These angles are supplementary (add to 180 degrees).
Two non-adjacent angles formed by two intersecting lines - across from each other. (<1 and <3 or <2 and <4)
Two angles whose measures add to 90 degrees.
Two angles whose measures add to 180 degrees.
Two lines in a plane that never meet
Two lines in a plane that intersect at right angles
A closed figure formed by three or more line segments that intersect only at their endpoints.
A polygon with equal angles and equal sides.
The sum of the lengths of the sides of a polygon.
The distance around a circle.
the number of square units needed to cover a flat surface
The total area of the surface of a three-dimensional object
The amount of space enclosed by a solid (three-dimensional) figure.
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