Question

When two triangles are similar and they have a scale factor of r,their areas are related by a scale factor of what

Answer 1

Let's look at this with an example.

Answer 2

Here's a right triangle. The area is \(A = \dfrac{bh}{2} \)

Can you calculate the area?

Answer 3

Notice that since this triangle is a right triangle, you can use the side of length 2 as the base and the side of length 1 as the height. That makes finding the area easy.