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Geometric Figures

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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Question
Answer
Two opposite angles formed by the intersection of two lines.   Vertical Angles  
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Angles that have the same measurement   Congruent  
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Two angles that share a common vertex, common side, and do not overlap   Adjacent  
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Two angles that have a sum of 90 degrees   complementary  
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Two angles that have a sum of 180 degrees   Supplementary  
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All angles are acute in the triangle   Acute Triangle  
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There is 1 right angles in the triangle   Right Triangle  
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There is 1 obtuse angle in the triangle   Obtuse Triangles  
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Less than 90 degreeAcute angle   Acute angle  
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Exactly 90 degreesRight angle   Right angle  
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Greater than 90 degreesObtuse angle   Obtuse angle  
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A triangle with no congruent sides   Scalene triangle  
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A triangle with two congruent sides   Isosceles triangle  
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All sides are congruent in the triangle   Equalateral  
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Sides with the same length   Congruent sides  
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Representation of objects that are too big to draw in actual size   Scale drawing/model  
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The ratio that compares the measure of the model to the measure of the actual object   Scale  
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A scale written as a ratio with no units in simplest form   Scale factor  
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A flat surface that goes on forever in all directions   plane  
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Lines that fall on the same plane   coplanar  
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Lines that will never intersect   parallel  
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Line where two planes intersect   Edge  
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Point where 3 or more planes intersect   vertex  
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a flat surface   face  
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a line segment whose endpoints are vertices that are neither adjacent nor on the same face   Diagnol  
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A 3D figure with 2 parallel congruent circular bases connected by a curved surface   Cylander  
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A 3D figure with one circular base connected by a curved side to one vertex   Cone  
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