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19 Cards in this Set
- Front
- Back
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point
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an exact location in space
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line
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a straight path that extends without end in opposite direction
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ray
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a part of a line; has one end point and extends without end in one direction
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line segment
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a part of a line or ray that extends from one end point to another
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plane
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a perfectly flat surface that extends infinatly in all directions
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congruent
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two figures having the same shape and size
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angle
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two rays with a common end point
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vertex
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end point
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right angle
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an angle that measures exactly 90 degrees
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acute angle
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an angle that measures less than 90 degrees
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obtuse angle
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an angle that measures more than 90 degrees but less than 180 degrees
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straight angle
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an angle that measures exactly 180 degrees
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complementary angles
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sum of the measure of two angles is 90 degrees
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supplementary angles
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sum of the measure of two angles is 180 degrees
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perpendicular lines
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angles formed by two intersecting lines are equal to 90 degrees
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parallel lines
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lines that do not intersect; in the same plane
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skew lines
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do not intersect but are not parallel; different planes
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vertical angles
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opposite angles formed by two intersecting lines
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transversal
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a line that intersects two or more lines
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