8th Grade - 1/27/11
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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| Cross Products Property | Multiplying the means, then the extremes, and setting them equal to solve for a variable.
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| Ratio | a comparison of 2 numbers by division
Represented by- a:b , a/b , or a to b
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| Proportion | 2 ratios set equal
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| Geometric Mean | A/X = X/B
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| Reciprocal Property | If A/B = C/D , then B/A = D/C
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| Interchanging Means Property | If A/B = C/D , then A/C = B/D
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| Scale | Ratio that describes how the dimensions of a model are related to the actual object
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| Similar Polygons | Same shape, congruent angles, proportional sides.
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| Scale Factor | The ratio of 2 corresponding sides in similar figures.
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| Theorem 6.1: Perimeters of Similar Polygons | If 2 polygons are similar, then the ratio of the perimeter = the ratio of the sides.
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| Corresponding Lengths in Similar Polygons | If 2 polygons are similar, then the ratio of the 2 corresponding lengths = the scale factor.
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| Postulate 22: AA Similarity Postulate | If 2 angles of one triangle are congruent to 2 angles of another triangle, then the triangles are similar.
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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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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.
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:
mgill202
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