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26 Cards in this Set
- Front
- Back
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Point |
indicates location has no size named with a single capital letter |
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Line |
straight path that extends forever in two opposite directions |
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Collinear |
points on the same line |
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Plane |
flat surface containing infinitely many lines extends in all directions |
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Coplaner |
points lying in the same plane |
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Parallel Lines |
lines that never cross |
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Perpendicular Lines |
lines that intersect to form a 90 degree angle |
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Line Segment |
part of a line that has two endpoints and points in between them |
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Distance |
length; space between two points |
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Ray |
part of a line consisting of one endpoint and extends forever in one direction |
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Opposite Ray |
two rays that share an endpoint and extend in opposite directions |
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Congruent |
to be equal to |
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Midpoint |
divides a line segment into two congruent segments |
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Intersection |
set of points that figures, such as lines, have in common |
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Segment Bisector |
line, ray, or other segment that intersects another segment as its midpoint |
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Angle |
formed by two rays w/ same endpoint |
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Angle Bisector |
ray that divides an into into congruent angles |
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Acute |
angle between 0 and 90 |
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Obtuse |
angle over 90 below 180 |
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Right |
angle exactly 90 degrees |
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Straight |
a line, 180 degrees |
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Complimentary Angles |
two angles with a measure of 90 degrees |
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Supplementary Angles |
two angles w/ a measure sum of 180 degrees |
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Adjacent Angles |
two angles that share a common side, vertex, & no common interior points |
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Linear Pairs |
adjacent angles that form a line |
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Vertical Angles |
two angles whose sides are opposite rays form a cross congruent |
