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Math Vocabulary Chapter 8 Flashcards

Quiz yourself by thinking what should be in each of the black spaces below before clicking on it to display the answer.
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Term
Definition
Vertex   The point where the two rays meet  
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Right Angle   Exactly 90 degrees  
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Acute Angle   Less than 90 degrees  
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Obtuse Angle   Greater than 90 degrees  
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Straight   Exactly 180 degrees  
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Vertical Angle   Opposite angles formed by the intersection of two lines  
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Congruent   Have the same measure  
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Adjacent Angle   They share a common vertex, a common side, and do not overlap  
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Prism   Three dimensional figure with at least two parallel faces  
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Bases   Congruent faces that are polygons  
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Pyramid   A three dimensional figure with one base that is a polygon  
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Plane   A flat surface that goes on forever in all direction  
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Coplanar   They lie in the same plane  
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Parallel   They will never intersect  
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Polyhedron   A three dimensional figure with flat surface that are polygons  
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Edge   Two planes intersect in a line  
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Face   A flat surface  
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Vertex   Where three or more planes intersect at a point  
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Diagonal   A line segment whose endpoints are vertices that are neither adjacent nor on the same face  
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Cylinder   A three dimensional figure with two parallel congruent circular bases connected by a curved surface  
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Cone   On circular base connected by a curved side to a single vertex  
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Cross Section   The intersection of a solid and plane of the solid  
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Supplementary Angles   If the sum of their measures is 180 degrees  
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Complementary Angles   If the sum of their measures is 90 degrees  
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Acute Triangle   All acute side  
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Right triangle   1 right triangle  
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Obtuse Triangle   1 obtuse angle  
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Scalene Triangle   No congruent sides  
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Isosceles Triangle   At least 2 congruent sides  
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Equilateral Triangle   3 congruent sides  
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Triangle   A figure with three sides and three angles  
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Congruent Segments   Sides with the same length  
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Scale model   Model used to represent objects that are too large or too small to be built at actual size  
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Created by: vanne0112
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