MD Geometry Chapter 1 Vocabulary
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
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Is a line, segment, ray or plane that intersects a segment at it's midpoint. | segment bisector
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A pair of adjacent angles whose non-common sides are opposite rays | linear pair
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Are collinear ray with the same endpoints that form a line. | opposite ray
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Formed by 2 rays with the same endpoint. The common endpoint is the vertex. | angle
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Set of values that show an exact position. This is the distance and position from the origin of a number line. | coordinate of a point
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It is undefined, has no thickness, and is a flat surface. | plane
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Are two angles whose sides form 2 pairs of opposite rays. | vertical angles
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A part of a line that consists of 2 points called endpoints and all the points between them. | segment
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Segment that have the same length. | congruent segments
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Angle that equals 90 degrees. | right angle
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Not in the same plane. | non-coplanar
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Is the point that the segment in to two congruent halves or the point right in the middle. | midpoint
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Common point or end point of an angle. | vertex of the angle
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Are angles that have the same measure. | congruent angles
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Rays of an angle. | side of an angle
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Two coplanar angles that have one common side and a common vertex but no common interior. | adjacent angles
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In the same plane. | coplanar
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Is a ray that divides an angle into two congruent angles. | angle bisector
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Is the part of a line that consists of one endpoint and all of the points of the line on one side of the endpoint. | ray
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Is an accepted statement or fact | postulate or axiom
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Two angles are ________ if the sum of their measures is 180 degrees. | supplementary angles
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A angle whose measure is equal to 180 degrees. | straight angle
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Is the set of all points. | space
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Two angles are _______ if the sum of the measure is 90 degrees. | complementary angles
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The absolute value of the distance of the coordinates of the points. | distance between 2 points on a line
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Points that do not lie on the same line. | non-collinear
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Is a 2 dimensional pattern that you can fold to form a 3 dimensional figure. | net
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Points lying in the same straight line. | collinear
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It is undefined, a straight path in two ways, and no endpoint. | line
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It is undefined, is thought of as a location, and has no size | point
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The______ of 2 or more geometric figures is the set of points the figures have in common. | intersection
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Angle smaller than 90 degrees. | acute angle
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Angle greater that 90 degrees. | Obtuse angle
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