Unit 1 Geometry Chapter 7 Similarity
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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Proportion | An equation stating that two ratios are equal
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Extremes | The outer values of a:b = c:d. (a and d are extremes)
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Means | The inner values of the proportion a:b=c:d. (b and c are the means)
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Cross products | The product of the means and the extremes. (ad = bc)
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Ratio | The comparison of two numbers using division
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Similar Figures | Figures that have the same shape but not necessarily the same size
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Similar Polygons | Corresponding angles are congruent and corresponding side lengths are proportional
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Similarity Ratio | The ratio of the lengths of the corresponding sides of two similar polygons
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Indirect Measurement | Any method that uses formulas, similar figures, or proportions to measure an object
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Scale Drawing | Representing an object as smaller or larger than its original size
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Scale | The ratio of any length in the drawing to the corresponding actual length
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Dilation | A transformation that changes the size of a figure but not its shape
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Scale Factor | How much a figure is enlarged or reduced
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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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