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20 Cards in this Set
- Front
- Back
a point
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a location in space having no measure
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a line
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straight extending infinitely in two directions.
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a ray
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straight extending infinitely in one direction
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a segment
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straight and has a finite length
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a plane
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a flat surface extending infinitely in all directions
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collinear
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points in a straight line
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parallel lines
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lines that never intersect
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perpendicular lines
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intersect to form right angles
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midpoint
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seperates a segmen into two equal parts
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congruent
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having equal measure
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acute angle
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an angle that measures between 0 and 90 degrees
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right angle
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measures exactly 90 degrees
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an obtuse angle
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measures between 90 and 180 degrees
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a straight angle
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measures exactly 180 degrees
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reflex angle
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measures between 180 and 360
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complementary angles
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add up to 90 degrees
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supplementary angles
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add up to 180 degrees
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vertical angles
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opposite angles formed by intersecting lines
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adjacent angles
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next to eachother and have the same vertex
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transversal
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a line that intersects two other lines at different points
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