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Geometry

Quiz yourself by thinking what should be in each of the black spaces below before clicking on it to display the answer.
        Help!  

Question
Answer
rx-axis(x,y)=   (x,-y)  
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ry-axis(x,y)=   (-x,y)  
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ry=-x(x,y)=   (-y,-x)  
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rx=1/ry=1=   Draw a picture.  
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ry=x(x,y)=   (y,x)  
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What do you do to points that are dilated by a certain number?   Multiply each coordinate by the dilation.  
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How do you create an equation of a dilated line?   Keep the slope, multiply the y-intercept.  
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How do you create new coordinates under a translation?   Add/Subtract the numbers next to the T according to their corresponding number. (Can be described as a vector as well.)  
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How do you create new points based on 90 degree rotations?   Bring the 2nd number to the front and make it negative.  
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Are distances preserved in dilations?   No, but they are proportional.  
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Are angles preserved in dilations?   Yes.  
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Rorgin(x,y)=   (-x,-y)  
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What is the relationship between the ratio of sides and ratio of perimeters?   They are equal.  
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What is the relationship between ratio of the sides are ratio of the areas?   (Ratio of sides) squared = ratio of areas.  
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Created by: emarciante9
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