Geometry
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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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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Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
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To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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Created by:
emarciante9
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