The sides of most Geometric shapes relate to each other by known ratios. Likewise, there
is frequently a need to scale up or scale down a geometric shape, requiring ratios. Thus,
a good understanding of how to work with ratios is essential to Geometry.
These videos may be used as a refresher for working with Ratios and Proportions:
Understanding how to work with ratios is an essential life skill. How many
calories are in 1/2 of a pizza? If you need tires, is it better to buy them at a 25% sale or at a store that sells
4 for the price of 3? If a bushel typically has 120 apples, and you want 30 apples, will 1/4 bushell be enough?
Knowing how to use ratios will make these and many other questions second nature to you.
