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8 Cards in this Set
- Front
- Back
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point
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the most fundamental object in geometry. It is represented by a dot and named by a capital letter. A point represents position only; it has zero size (that is, zero length, zero width, and zero height).
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line
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can be thought of as a connected set of infinitely many points. It extends infinitely far in two opposite directions. A line has infinite length, zero width, and zero height. Any two points on the line name it. The symbol ↔ written on top of two letters is used to denote that line. A line may also be named by one small letter
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plane
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may be considered as an infinite set of points forming a connected flat surface extending infinitely far in all directions. A plane has infinite length, infinite width, and zero height (or thickness). It is usually represented in drawings by a four-sided figure. A single capital letter is used to denote a plane. The word plane is written with the letter so as not to be confused with a point
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vertex
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a corner
An edge joins one vertex with another A face is an individual surface |
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angle bisector
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a ray that divides an angle into two equal parts.
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collinear
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a certain set of points are all on the same line.
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ray
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it has just one end
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line
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it is straight, has no thickness and it extends in both directions in both ways
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