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CDFMS 7th Geo Vocab

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Term
Definition
complementary angles   two angles with a sum of 90 degrees.  
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congruent   two figures that have lengths and angle measurements of the same size  
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equilateral triangle   a triangle that has all three sides congruent.  
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isosceles triangles   triangles that have at least two congruent sides  
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parallelogram   a figure that is a quadrilateral with both pairs of opposite sides parallel and opposite sides congruent  
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reflection   a type of transformation involving a flip of the graphed figure  
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rhombus   a quadrilateral that has opposite sides parallel, all four sides congruent, and not all angles equal  
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scalene triangle   triangles that have no congruent sides  
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similar   figures that have congruent corresponding angles and proportional corresponding sides  
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supplementary angles   two angles with a sum that equals 180 degrees  
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transformation   a change in position, size, or shape of a figure on a coordinate plane.  
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translation   a type of transformation involving a slide of the graphed figure  
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trapezoid   a quadrilateral with exactly one set of parallel sides  
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proportion   an equation that states that two ratios are equal  
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corresponding angles   have the same position in two different similar figures and are congruent  
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ratio   a comparison of two numbers  
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corresponding sides   have the same position in two different similar figures and are proportional  
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unit cost   the cost for one unit of measure  
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cross products   a method that can be used to determine if two ratios are equal  
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