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33 Cards in this Set
- Front
- Back
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point
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a location in space
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line
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a set of points going in opposite directions
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line segment
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part of a line with two endpoints
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ray
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part of a line with one endpoint
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triangle
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a polygon with three sides
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parallel
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lines in the same plane that never intersect
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perpendicular
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lines that intersect to form right angles
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skew
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lines not in the same plane that never intersect
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acute angle
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an angle whose measure is between 0 and 90 degrees
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obtuse angle
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an angle whose measure is between 90 and 180 degrees
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right angle
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an angle whose measure is exactly 90 degrees
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acute triangle
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a triangle with all acute angles
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obtuse triangle
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a triangle with one obtuse angle
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right triangle
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a triangle with one right angle
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angle
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two rays with a common endpoint
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vertex
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the common endpoint of an angle
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adjacent angles
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angles that share a common side
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complementary angles
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angles whose sum is 90
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supplementary angles
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angles whose sum is 180
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vertical angles
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a pair of angles directly across from each other that are formed by intersecting lines
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scalene triangle
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a triangle with three unequal sides
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isosceles triangle
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a triangle with at least two equal sides
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equilateral triangle
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a triangle with three equal sides
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equiangular triangle
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a triangle with all angles equal in measure
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leg
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a) a side of the isosceles triangle that is opposite the base angle or b) a side of a right triangle that is not the hypotenuse
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hypotenuse
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the side in a right triangle that is opposite the right angle
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base angles
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angles in an isosceles triangle that are opposite the legs
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alternate interior angles
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angles that are inside the parallel lines and on opposite sides of the transversal
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alternate exterior angles
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angles that are outside the parallel lines and on opposite sides of the transversal
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corresponding angles
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angles that are in the same position with regard to the parallel lines and transversal
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same side interior angles
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angles that are inside the parallel lines and on the same side of the transversal
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transversal
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a line that cuts across two parallel lines
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bisect
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a line, ray or line segment that cuts an angle or segment in half
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