Geomerty Vocabulary for Chapter 8
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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| Congruent | Having the same size and shape
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| Line | a straight path that extends without end
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| Line Segment | Having a line between two endpoints
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| Plane | a flat surface that extends forever
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| Point | a location in space
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| Ray | A part of a line that starts at one endpoint and extends forever
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| angle | a figure formed by two rays
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| vertex | the point where two sides intersect
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| acute vertex | a vertex that measures less than 90
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| Complementary Angles | two angles whose measures add up to 90
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| obtuse angle | a angle whose measure is greater than 90 but less than 180
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| right angle | an angle that measures 90
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| straight angle | an angle that measures 180
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| supplementary | Two angles that have the sum of 180
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| adjacent angles | Angles in the same plane that have a common vertex
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| corresponding angles | A pair of angles formed by a transversal and two line
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| parallel line | lines in a plane that do not intersect
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| perpendicular lines | lines in a plane that intersect
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| skew lines | lines that lie in different planes
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| transversal | a line that intersects two or more lines
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| vertical angles | A pair of opposite congruent angles
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| arc | a part of a circle named by the endpoints
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| center of a circle | a point in a circle that is equal distance away from all parts of the circle
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| central angle | a angle with a vertex at the center of a circle
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| chord | a line segment with endpoints on a circle
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| circle | The set of all points in a plane
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| diameter | a line segment that passes through a circle
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| radius | a line segments with one endpoint in the circle on the edge
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| sector | a region enclosed by two radia
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| poloygon | closed plane figure formed gy three or more line segments that intersect only at thier endpoints
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| regular polygon | a polygon with congruent sides and angle
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| acute triangle | a triagle that has at least one acute angle
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| obtuse triangle | an triangle that has an angle whose measure is greater than 90 but less than 180
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| right triangle | an triangle that has an angle whose measure is 90
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| isosacles triangle | a triangle that has at least two congruent sides.
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| paralellogram | A quadrilateral with two pairs of equal sides
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| rectangle | A parallelogram with four right angles
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| square | a rectagle with four congruent sides
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| rhombus | a parrelgram with four equal sides
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| trapoziod | A quadlatertical with exactly four equal sides
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| Side | Side
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| image | a figure resulting from a transformation
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| line of reflection | a line that a figure is flipped across
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| reflection | a transformation of a figure
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| rotation | a figure that is turned around a point
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| transformation | a change in size or position
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| translation | a movement or slide across a figure
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| asymmetry | not identical on either side of a central line
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| center | the point of which a figure is rotated
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| line of symmetry | a “mirror” line of symmetry
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| line symmetry | identical on either side of a central line
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| rotational symmetry | can be rotated less than 360 and coincide with the original figure
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Or sort by any of the columns using the down arrow next to any column heading.
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