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20 Cards in this Set
- Front
- Back
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point
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a dot. no dementions named with capital letter
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line
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extends forever in 1 dimension. named by 2 points on the line, or an italic letter
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line segment
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part of the line between 2 endpoints
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ray
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starts at an initial point and goes forever in 1 dimention.
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opposite rays
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start at the same point and go on foever in oppiste direction.
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plane
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extends forever in 2 directions.
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collinear
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points on the same line
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coplanar
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on the same plane
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postulates and Axioms
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statments that are accepted without proof
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congruent
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objects have the same size and shape.
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angle
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formed by 2 rays that have the same inital point
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adjacent
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2 angles next to each other that share a common ray
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acute angle
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less than 90 degrees
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obtuse angle
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greater than 90 and less than 180 degrees
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right angle
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only 90 degrees
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straight angle
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only 180 degrees
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midpoint
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a segment is the point that divides, or BISECTS, the segment into two congruent segments
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segment bisector
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a segment, ray, line, or
plane that intersects a segment at its midpoint |
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construction
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a geometric drawing that uses a limited set of tools.
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angle bisector
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a ray that divides an angle into two adjacent angles that are congruent
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