chapter 7 vocab Flashcards
1
Q
In the proportion a/b=c/d where b=/0 and d=/0. The cross product’s are ad and bc. The proportion is true if and only if the cross products are equal.
A
cross products
2
Q
A transformation that enlarges or reduces the original figure proportionally.
A
dilation
3
Q
an image that is larger than the original figure.
A
enlargement
4
Q
an equation of the form a/b=a/c that states that two ratios are equal
A
proportion
5
Q
a comparison of two quantities using division
A
ratio
6
Q
an image that is smaller than the original figure
A
reduction
7
Q
the ratio of the length of two corresponding sides of two similar polygons or two similar solids.
A
scale factor
8
Q
two polygons are similar if and only if there corresponding angles are congruent AND their corresponding sides are proportional
A
similar polygons
