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15 Cards in this Set
- Front
- Back
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def. of segment
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segment AB consists of the points A & B and all the points between A and B.
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def. of ray
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ray CD is the half line with C as its end point.
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opposite rays
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rays that share the same endpoint and together form a line.
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def. of midpoint
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C is the midpoint of AB.
if C is between A and B and AC = BC |
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def. of space
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the set of all points
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def. of collinear points
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points that are all on a line together
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def. of coplanar points
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points that are all on one plane together
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def. of a postulate
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a statement we accept to be true but do not prove true.
(however, it seems very logical to believe) |
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def. of an angle
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a figure formed by 2 rays that share a common end point.
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def. of adjacent angles
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2 angles in the same plane that share a common vertex, a common side but no common interior point
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def. of an angle bisector
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a ray that cuts an angle into 2 congruent adjacent angles.
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def. of complementary angles
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2 angles whose sum of measures is 90º
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def. of supplementary angles
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2 angles whose sum of measures is 180º
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def. of vertical angles
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2 angles that together form 2 pairs of opposite rays.
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def. of a theorem
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a statement we prove true using definitions, postulates, and other already proved theories.
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