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19 Cards in this Set
- Front
- Back
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Point |
A location usually represented by a dot but in reality has no actual size or thickness |
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Line |
A stright path that has no thickenss or size and extends forever in opposite directions |
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Plane |
A flat surface that has no thickness and extends forever (usually represented by a parallelogram) |
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Ray |
A part of a line that has one endpoint and extends forever in one direction |
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Line segment |
A part of a line or Ray that extends from one endpoint to another |
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Congruent |
Having the SAME shape and the SAME size |
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Right angle |
An angle that measures exactly 90° |
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Acute angle |
An angle greater than 0° and less than 90° |
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Obtuse angle |
An angle that measures greater than 90° and less than 180° |
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Straight angle |
An angle that measures exactly 180° |
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Complementary angles |
The sum of two angles equaling 90° |
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Supplementary angles |
The sum of two angles equaling 180° |
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Vertex |
On an angle or polygon; the point where two sides intersect |
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Perpendicular lines |
When two intersecting lines form an angle of 90° |
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Parrallel line |
Lines of the same plane that never intersect |
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Skew lines |
Lines that are not parrallel and do not intersect |
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Vertical angles |
Opposite angles formed by two intersecting lines |
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Adjacent angles |
They have a common vertex and a common side, but no common interior points |
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Transversal |
A line that intersects two or more lines in the same plane |
