High School Math
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| point | a basic undefined term of geometry; simply a location; used to name lines and planes; they are recognized as a dot and are named by capital letters
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| line | made up of points and has no thickness or width; it is represented with arrowheads at each end; it is usually named by lowercase script letters or by writing capital letters for two points on the line with a double arrow over the pair of letters
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| collinear | points on the same line
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| plane | a flat surface made up of points;it has no depth and extends indefinitely in all directions; it is named by a capital script letter or by three noncollinear points; it is represented by a shaded, slanted 4-sided figure
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| coplanar | points that lie in the same plane
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| undefined terms | words, usually readily understood, that are not formally explained by means of more basic words and concepts. the basic terms of geometry are point, line, and plane
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| space | a boundless, three-dimensional set of all points; contains lines and planes
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| locus | another way to describe a group of points; a set of points that satisfy a particular condition
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| line segment | a measurable part of a line that consists of two points, called endpoints, and all of the points between them
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| precision | the accuracy of any measurement depends on the smallest unit available on the measuring tool
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| betweenness of points | the measure between points; for any two real numbers "a" and "b", there is a real number "n" between "a" and "b" such that a<n<b
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| between | for any two points A and B on a line, there is another point C between A and B if and only if A, B, and C are collinear and AC + CB = AB
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| congruent | having the same measure
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| construction | a method of creating geometric figures without the benefit of measuring tools; generally, only a pencil, straightedge, and compass are used
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| relative error | the ratio of the half-unit difference in precision to the entire measure, expressed as a percent
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| midpoint | the point halfway between the endpoints of a segment
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| segment bisector | a segment, line, or plane that intersects a segment at its midpoint
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| degree | a unit of measure used in measuring angles and arcs; an arc of a circle with a measure of 1 degrees is 1/360 of the entire circle
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| ray | part of a line; it has one endpoint and extends indefinitely in one direction; named by stating the endpoint first and then any other point
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| opposite rays | also known as a straight angle; its measure is 180 degrees; a point on the line where you can name two rays in opposite direction of each other
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| angle | formed by two noncollinear rays that have a common endpoint
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| interior | a point is in the inside of an angle if it does not lie on the angle itself and it lies on a segment with endpoints that are on the sides of the angle
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| exterior | a point is on the outside of the angle if it is neither on the angle nor in the interior of the angle
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| right angle | an angle with a degree measure of 90
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| acute angle | an angle with a degree measure less than 90
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| obtuse angle | an angle with degree measure greater than 90 and less than 180
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| angle bisector | a ray that divides an angle into two congruent angles
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| sides | the two rays of an angle
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| vertex | the common endpoint of an angle
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| adjacent angles | two angles that lie in the same plane, have a common vertex and a common side, but no common interior points
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| vertical angles | two nonadjacent angles formed by two intersecting lines
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| linear pair | a pair of adjacent angles whose noncommon sides are opposite rays
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| complementary angles |
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| supplementary angles |
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| perpendicular |
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| polygon |
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| concave |
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| convex |
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| n-gon |
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| regular polygon |
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| perimeter |
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Created by:
rierei1971
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