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Stretching and Shrinking
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Terms in this set (12)
adjacent sides
Two sides that meet at a vertex. In this rectangle, sides QR and RS are _________ because they meet at vertex R.
corresponding angles
_________ have the same relative position in similar figures. In the pair of similar figures shown, angle ABC and angle DEF are _________.
corresponding sides
_________ have the same relative position in similar figures. In the similar shapes shown, side AB and side DE are _________.
equivalent ratios
Ratios whose fraction representations are equivalent are called _________.
image
The figure that results from some transformation of a figure. It is often of interest to consider what is the same and what is different about a figure and its _________.
midpoint
A point that divides a line segment into two segments of equal length. In the figure shown, M is the _________ of the segment AB.
nested triangles
Triangles that share a common angle are sometimes called _________. In the figure shown, triangle ABC and triangle ADE are _________.
proportion
An equation stating that two ratios are equal.
ratio
A comparison of two quantities expressed with a phrase such as '4 to 1' which means '4 for every 1.' Such comparisons are often written as common fractions and in the special notation 4 : 1.
scale drawing
An image of a figure that is similar to the original.
scale factor
The number used to multiply the lengths of a figure to stretch or shrink it to a similar image. If we use a _________ of 3, all lengths in the image are 3 times as long as the corresponding lengths in the original.
similar
_________ figures have corresponding angles of equal measure and the ratios of each pair of corresponding sides are equivalent.
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