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Geometry

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# Glossary of Geometry

1. acute angle An abstract concept of a geometric feature that is the angle formed by two lines is smaller than a right angle and is less than 90 degree.last updated 2015/4/16
http://en.wikipedia.org/wiki/Angle#Types_of_angles last updated 2015/4/16
2. apex An abstract concept of a zero dimensional geometric feature that is the highest point or top of something when considering in upright position.last updated 2015/4/16
http://en.wikipedia.org/wiki/Apex_%28geometry%29 last updated 2015/4/16
3. base An abstract concept of a geometric feature that is the lowest part, foot or bottom of something when considering in upright position.last updated 2015/4/16
http://en.wikipedia.org/wiki/Base_%28geometry%29 last updated 2015/4/16
4. circle An abstract concept of a two dimensional geometric figure that is a plane shape bounded by one single line with all straight lines radiating from only one single point within the figure and falling upon the line are of equal in length.last updated 2015/4/16
http://en.wikipedia.org/wiki/Circle last updated 2015/4/16
5. circular A description of something that having a shape or appearance like a circle.last updated 2015/4/16
http://en.wikipedia.org/wiki/Circle last updated 2015/4/16
6. circumference An abstract concept of a geometric feature that is the border line around the enclosing boundary of a curved geometric figure.last updated 2015/4/16
http://en.wikipedia.org/wiki/Circumference last updated 2015/4/16
7. cone An abstract concept of a three dimensional geometric figure that is the geometric form of an solid object bounded by two surface boundaries or sides obtained by turning a right triangle a full 360 degree rotation with one side adjacent to the right angle fixed as the rotating axis in three dmensional space.last updated 2015/4/17
http://en.wikipedia.org/wiki/Cone last updated 2015/4/17
8. cube An abstract concept of a three dimensional geometric figure that is the geometric form of an solid object bounded by six square surface boundaries or sides of the same size in three dmensional space with angle between two adjacent sides is a right angle.last updated 2015/4/16
http://en.wikipedia.org/wiki/Cube last updated 2015/4/16
9. diagonal An abstract concept of a one dimensional geometric thing that is the linear connection of two non-consecutive vertices in an object through a straight line segment.last updated 2015/4/16
http://en.wikipedia.org/wiki/Diagonal last updated 2015/4/16
10. diameter An abstract concept of a one dimension geometric feature that is the straight line radiated in both directions from a point within the boundary through the center to the boundary.last updated 2015/4/16
http://en.wikipedia.org/wiki/Diameter last updated 2015/4/16
11. ellipse An abstract concept of a two dimensional geometric figure that is a plane shape bounded by one single line with the sum of distances from two fixed points within the figure radiating to every point on the boundary is a constant.last updated 2015/4/16
http://en.wikipedia.org/wiki/Ellipse last updated 2015/4/16
12. geometric shape An abstract concept of a geometric figure that is the geometric form of an object, usually a plane shape or figure, bounded by any boundary or boundaries.last updated 2015/4/16
http://en.wikipedia.org/wiki/Shape last updated 2015/4/16
13. hypotenuse An abstract concept of a geometric feature that is the longest side of a right angle triangle opposite to the right angle.last updated 2015/4/16
http://en.wikipedia.org/wiki/Hypotenuse last updated 2015/4/16
14. isosceles triangle An abstract concept of a two dimensional geometric figure that is a plane shape with three straight sides of only two adjacent sides equal in length.last updated 2015/4/16
http://en.wikipedia.org/wiki/Isosceles_triangle last updated 2015/4/16
15. line An abstract concept of a general one dimensional geometric thing that is a straight or curved continuous extent of length with no breadth and thickness.last updated 2015/4/15
http://en.wikipedia.org/wiki/Line_%28geometry%29 last updated 2015/4/15
16. parallel lines An abstract concept of a two dimensional geometric feature that is two lines lying in a plane do not meet one another in neither directions when indefinitely in both direction.last updated 2015/4/15
http://en.wikipedia.org/wiki/Parallel_%28geometry%29 last updated 2015/4/15
17. perpendicular lines An abstract concept of a two dimensional geometric feature that is two lines standing upon one another in a plane with all formed adjacent angles equal to a right angle.last updated 2015/4/15
http://en.wikipedia.org/wiki/Perpendicular last updated 2015/4/15
18. pyramid An abstract concept of a three dimensional geometric figure that is the geometric form of an solid object bounded by surface boundaries or sides obtained by connecting a polygonal base flat plane to a point of apex by lateral flat faces in three dmensional space.last updated 2015/4/17
http://en.wikipedia.org/wiki/Pyramid_%28geometry%29 last updated 2015/4/17
19. radius An abstract concept of a one dimension geometric feature that is the straight line radiated from the center to every point on the boundary.last updated 2015/4/16
20. rectangle An abstract concept of a two dimensional geometric figure that is a plane shape with four straight sides of opposite sides equal in length forming four internal right angles to each other.last updated 2015/4/16
http://en.wikipedia.org/wiki/Rectangle last updated 2015/4/16
21. rectangular A description of something that having a shape or appearance like a rectangle.last updated 2015/4/16
http://en.wikipedia.org/wiki/Rectangle last updated 2015/4/16
22. right angle An abstract concept of a geometric feature that is the angle formed by two lines standing upon one another in a plane when all formed adjacent angles equal to one another and is equal to 90 degree.last updated 2015/4/16
http://en.wikipedia.org/wiki/Right_angle last updated 2015/4/16
23. right triangle An abstract concept of a two dimensional geometric figure that is a plane shape with three straight sides of two adjacent sides forming a right angle to each other.last updated 2015/4/16
http://en.wikipedia.org/wiki/Right_triangle last updated 2015/4/16
24. side An abstract concept of a border of the boundary of something that is the edge or extremity of something.last updated 2015/4/15
http://en.wikipedia.org/wiki/Edge_%28geometry%29 last updated 2015/4/15
25. solid figure An abstract concept of a three dimensional geometric figure that is the geometric form of an object bounded by any boundary or boundaries in three dmensional space.last updated 2015/4/16
http://en.wikipedia.org/wiki/Solid_geometry last updated 2015/4/16
26. sphere An abstract concept of a three dimensional geometric figure that is the geometric form of an solid object bounded by one surface boundaries or sides obtained by turning a semicircle a full 360 degree rotation with the diameter as the rotating axis in three dmensional space.last updated 2015/4/17
http://en.wikipedia.org/wiki/Sphere last updated 2015/4/17
27. square An abstract concept of a two dimensional geometric figure that is a plane shape with four straight sides of equal length forming four internal right angles to each other.last updated 2015/4/15
http://en.wikipedia.org/wiki/Square last updated 2015/4/15
28. straight line An abstract concept of a one dimensional geometric thing that is a straight continuous extent of length with no breadth and thickness.last updated 2015/4/15
http://en.wikipedia.org/wiki/Line_%28geometry%29 last updated 2015/4/15

ID: 150900024 Last Updated: 2015/9/24 Revision:

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