46 Geometry words
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each of the black spaces below before clicking
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| Acute Angle | An angle that is smaller than 90 digrees.
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| Angle | The figure formed by two rays that meet at a common endpoint.
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| Center | A point from which every point on a circle is the same distance.
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| Circle | Asimple closed curve;all the points on the circle are the same distance from the center point.
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| Congruent Figures | Figures that have same size and shape.
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| Degree | A unit used to measure angles.
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| Diameter | A line segment that passes through the center of a circle and has both end points on a circle.
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| Edge | The line segment where two faces of a soild figure meet.
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| equilateral Triangle | Atriangle whose three sides are congruent.
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| End Point | The point at the end of a line segment or ray.
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| Intersecting Line | Lines that meet or cross at a common point.
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| Isosceles Triagle | Atriangle with at least two sides that are equal in length
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| Line | A straight set of points that go on forever in opposite directions.
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| Obtuse Angle | An angle that measures more than 90 digrees but less than 180.
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| Half- turn symmetery | A figure that matches its image when its image when it is turned halfway around has half-turn symmetry.
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| Rectangular Prism | A solid figure with six rectangular faces.
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| Slide (translation) | The movement of a figure aloung a line without changing direction
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| Ray | The part of a line that starts at an endpoint and goes on forever in one direction
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| Rectangle | A parallelogram with four right angles
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| Perpendicular lines | Intersecting lines in the same plane that form four right angles
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| Line Segment | The part of a line between two endpoints
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| Radius | A line segment with endpoints at the center of a circle and on the circle
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| Straight Angle | An angle that measures 180 digrees
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| Trapezoid | A quadrillateral with exactly one pair of parallel sides
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| SimilarFigures | Figures that have the same shape.They may or may not be the same size
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| Vertex | A common endpoint of two rays or line segment.In a soild figure,the point at witch three or more edges meet
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| Perimeter | The distince around a shape
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| Square | A parallelogram that has four right angles and four congruent sides
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| Rhombus | An angle that measures 90 digrees.Itforms a square corner
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| Volume | The number of cubic units needed to fill a soild figure
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| Square Pyramid | A pyramid with a square base
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| Area | The number of square units needed to cover a flat surface
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| Quadrillateral | Any four-sided polygon
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| Sphere | A solid figure that is shaped like a ball
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| Parallelogram | A quadrilateral whoose opposite sides are parallel and congruent
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| Turn | The movement of a figure around a point
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| Scalene Triangle | A triangle with no sides that are equal
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| Point | An exact location in space
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| Triangle | A polygon with three sides
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| Parallel lines | Lines in the same plane that never intersect
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| Polygon | A simple closed flat figure made up of three or more line segment
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| Tiangular Prism | A soild figure with two parallel triangular faces
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| Plane | A flat surface that extends indefinitely in all directions
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| Right Triangle | A triangle that has one right angle
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| Protractor | The tool used to measure angles
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