unknown Terms benidormclubdeportivo.org Topical synopsis | Geometry summary | MathBits" Teacher resources Terms of Use call Person: Donna Roberts

In geometry, formal meanings are developed using other defined words or terms. Over there are, however, 3 words in geometry that are not formally defined. This words are point, line and plane, and are referred to as the "three undefined regards to geometry".

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While this words space "undefined" in the official sense, we can still "describe" these words. The descriptions, declared below, describe these native in relationship to geometry.

POINT • a allude indicates a place (or position) in space. • a allude has no dimension (actual size). • a point has no length, no width, and no elevation (thickness). • a suggest is usually called with a capital letter. • in the name: coordinates plane, a point is named by an ordered pair, (x,y). if we represent a suggest with a dot, the dot can be really tiny or an extremely large. Remember, a point has no size.
The size of the dot attracted to stand for a suggest makes no difference. Points have no size. They merely represent a location.
LINE (straight line) • a line has no thickness. • a line"s length extends in one dimension. • a heat goes on forever in both directions. • a line has infinite length, zero width, and also zero height. • a line is presume to be straight. • a line is attracted with arrow head on both ends. • a heat is named by a solitary lowercase manuscript letter, or by any kind of two (or more) points i m sorry lie on the line.
Lines can be labeled v a single script letter, or by 2 points on the line,
. The thickness the a line renders no difference.

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PLANE • a plane has two dimensions. • a aircraft forms a flat surface extending indefinitely in every directions. • a airplane has infinite length, infinite width and zero elevation (thickness). • a aircraft is drawn as a four-sided number resembling a tabletop or a parallelogram. • a airplane is named by a single letter (plane m) or by three coplanar, yet non-collinear,* clues (plane ABC).
aircraft m or airplane ABC. If the chart of a airplane has edges, you need to remember that the aircraft actually has no boundaries.
* upright points are points the lie ~ above the same straight line. Coplanar points are points the line in the same plane.

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