#### What is true about the ratio of the area of similar triangles?

**Answer:**
If 2 triangles are similar, their areas are the square of that similarity ratio (scale factor)

For instance if the similarity ratio of 2 triangles is $$\frac 3 4 $$ , then their areas have a ratio of $$\frac {3^2}{ 4^2} = \frac {9}{16} $$

Let's look at the two similar triangles below to see this rule in action.