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Math Voc quiz 1/6/11
Question | Answer |
---|---|
point | indicates place or position; no length, width, or thickness. |
line | set of points |
straight line | extends withoutend in both directions |
plane | set of points suggested by flat surface; extends endlessly in all directions |
line segment | part of line consisting of end points & all points on line between endpoints |
ray | part of a line that consists of an endpoint and all of the points on one side of the endpoint |
degree | common standard unit of measure of an angle |
right angle | angle whose measure is 90 degrees |
acute angle | measure is greater than 0 & less than 90 |
obtuse angle | angle whose measure is greater than 90 and less than 180 |
straight angle | angle whose measure is 180 |
perpendicular | when two lines intersect to form right angles |
adjacent angles | 2 angles in same plane that have a common vertex & a common side but don't have any interior points in common |
complementary angles | 2 angles whose sum is 90 degrees; angle is a complement of the other |
supplementary angles | 2 angles whose sum is 180; each angle is a supplement of each other |
linear pair of angles | adjacent angles that are supplementary |
vertical angles | 2 nonadjacent angles formed by intersecting lines |