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Unit 4
Stretching and Shrinking
18
Mathematics
7th Grade
12/12/2008

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Cards

Term
ray
Definition
Is a part of a line,with one end point and all the points of the line on one side of the end point.
Term
line
Definition
A series of points that extends in two directions with out end.
Term
right angle
Definition
Has a measure of exactly 90 degrees.
Term
acut angle
Definition
An angle that is less than 90 degrees.
Term
obtuse angle
Definition
Is an angle greater than 90 and less than 180 degrees.
Term
straight angle
Definition
Mesaure exactuly 180 degrees.
Term
complimentary angle
Definition
Two angles whos sum of their measure is 90 degrees.
Term
supplementary angles
Definition
Two sides an angles that add up to 180.
Term
equilateral triangle
Definition
All sides an angels are the same length.
Term
isosceles triangle
Definition
A triangle with at least two congruent sides.
Term
scalene triangle
Definition
A triangle that has no congrount side.
Term
corresponding angles
Definition
Sides or angles have the same relative position in similar figures
Term
equivalent ratios
Definition
Whoes fraction representations are equivalent are called equivalent ratios
Term
image
Definition
The figure that results from some transformation of a figure.
Term
midpoint
Definition
A point that divides a line segement into two segements of equal lenght.
Term
ratio
Definition
Comparison of two quantities/sometimes it is expressed as a fraction
Term
scale factor
Definition
The number used to multiply the lenghts of a figure to stretch or shrink it to a similar image
Term
similar
Definition
Same shape differnt size. In simalar figurs the angles or congrount identical /same /equal. to get a similar figur all sides of the figure must be enlarge of reduce by the same amount.
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