1) If you have a rectangular 3"x5" photograph that you want enlarged to fit a frame whose length is 20", what will the width of the new photograph be?
2) [tex]\frac{3}{4}=\frac{6}{8}[/tex]
[tex]\frac{2}{7}=\frac{4}{15}[/tex]
3) 9, 12 and 15 would be possible sides of a triangle.
Similarity is when two figures have the same angle measures and the sides are proportional.
In a proportion, you can cross multiply to see if the proportions are equal. If the cross products are equal, the proportion is true.
For 3 sides to make a triangle, the sum of the smaller two sides must be larger than the largest side.
