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23 Cards in this Set
- Front
- Back
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Point |
A location that has no size (a dot) |
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Line
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Extends infinitely in either direction but has no width
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Plane
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Flat two dimensional surface
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Collinear
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Three or more points that lie on the same line
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Coplaner
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Points that lie on the same plane |
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Segment
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A line that has two endpoints
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Endpoint
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A point where a line segment or ray ends
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Ray
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A line with a single endpoint |
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Acute
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An angle that is less than 90 degrees
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Right
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Two angles whose sum is 90 degrees
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Obtuse
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An angle that is greater than 90 degrees
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Straight
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An angle that measures 180 degrees
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Parallel Lines
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Two lines that never meet
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Perpendicular Lines
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Two lines meeting at a right angle
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Skew Lines
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Two lines that do not intersect and are not parallel |
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Transversal
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A line that cuts across two or more lines
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Corresponding angles |
when two lines are cut by a transversal, the angles matching in the corners of the two lines
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Alternate interior angles |
When two lines are cut by a transversal, the angles that are on opposite sides of the transversal but also inside the two lines |
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Supplementary
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Two angles whose sum is 180 degrees |
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Complementary
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An angle that is exactly 90 degrees |
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Vertical pair
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angles that are opposite each other when two lines cross |
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Preimage
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The original figure prior to a transformation |
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Image
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The figure after a transformation |
