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Unit 12 CC Math Voc
Geometry
Term | Definition |
---|---|
Intersecting lines | Lines that cross at one point. |
line | A straight path of points that goes on and on in the same direction. |
Perpendicular lines | Two intersecting lines that form right angles |
Parallel lines | In a place, lines that never intersect. |
Point | An exact location in space |
Plane | An endless flat surface |
acute angle | An angle that is less than a right angle. |
angle | A figure formed by two rays that have the same meeting point |
Obtuse angle | An angle that is greater than a right angle. |
Line segment | A part of a line that has two endpoints. |
Right angle | An angle that forms a square corner. |
Ray | A part of a line that has one endpoint and continues endlessly on one direction. |
Straight angle | An angle that forms a straight line. |
Protractor | A tool used to measure and draw angles. |
Degrees | The measurement used for angles. |
Side | Each of the line segments of a polygon. |
Vertex | The point where two rays meet to form an angle |
Octagon | A polygon with 8 sides. |
Quadrilateral | A polygon with 4 sides. |
Polygon | A closed plane figure made up of line segments. |
Triangle | A polygon with 3 sides. |
Unit angle | The turn or bend between two intersecting lines, line segments, rays, or planes. |
Obtuse Triangle | A triangle in which there is one obtuse angle. |
Right Triangle | A triangle in which there is one right angle. |
Parallelogram | A quadrilateral in which opposite sides are parallel |
Rhombus | A quadrilateral in which opposite sides are parallel, all sides are the same length. |
Trapezoid | A quadrilateral with only one pair of parallel sides. |
Square | A quadrilateral with four right angles, all sides the same length. |
End point | Either of two points marking the end of a line segment |
Two dimensional figure | A figure that has length and width but not height. |
Line of Symmetry | A line in which a figure can be reflected, resulting in a figure that looks exactly like the original. |
Symmetric | A figure where one side is a mirror image/ reflection |
Rectangle | A quadrilateral with four right angles |
Acute triangle | A triangle with 3 acute angles. |