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18 Cards in this Set
- Front
- Back
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point
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exact location in space
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line
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straight path that extends without end in opposite directions
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ray
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one endpoint extends with one direction without end
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line segment
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part of line or ray, extends from one endpoint to another
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plane
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perfectly flat surface; all directions
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congruent
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same shape and size
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angle
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2 rays; common endpoint
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vertex
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common endpoint
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right angle
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angle; exactly 90 degrees
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acute angle
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messures less than 90 degrees
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obtuse angle
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measures more than 90 and less than 180 degrees
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straight angle
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meaures 180 degrees
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complementary angles
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angles' sum measures 90 degrees
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supplementary angle
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angles' sum measures 180 degrees
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parallel lines
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line do not intersect; in the same plane
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skew lines
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do not intersect, not parallel; in different planes
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vertical angles
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opposite angles formed by 2 intersecting lines
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transversal
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intersect 2 or more than 2 lines
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