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marcus math vocab

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In the proportion a/b=c/d, where b is not equal to 0 and d is not equal to 0, the cross products are ad and bc. The proportion is true if and only if the cross products are equal.   cross products  
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A transformation determined by a center point C and a scale factor k. When k>0, the image P prime of P is the point on ray CP such that CPprime=/k/*CP. When k<0, the image P prime of P is the point on the ray opposite ray CP such that CPprime=k*CP.   dilation  
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An image that is larger then the original figure.   enlargement  
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In a/b=c/d, the numbers a and d   extremes  
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In a/b=c/d, the numbers b and c   means  
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A segment with endpoints that are the midpoints of two sides of a triangle.   midsegment of a triangle  
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An equation of the form a/b=c/d that states that two ratios are equal.   proportion  
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A comparison of two quantities using division.   ratio  
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An image that is smaller than the original figure.   reduction  
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The ratio of a length on the model or drawing to the actual length of the object being modeled or drawn.   scale  
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A drawing with lengths proportional to the object it represents.   scale drawing  
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The ratio of the lengths of two corresponding sides of two similar polygons or two similar solids.   scale factor  
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An object with lengths proportional to the object it represents.   scale model  
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Polygons that have the same shape but not necessarily the same size.   similar polygons  
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When a figure and its transformation image are similar.   similarity transformation  
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Created by: kmmspatriots
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