Similarity of Triangles

Similar triangles don't only look very much alike, but they also have a unique relationship between the length of their sides. This lecture series describes the properties of similar triangles. Watch the videos and complete the interactive exercises.

Practice

Determine similar triangles: SSS - Answers

1. Neither $\triangle D F E$ nor $\triangle H I G$ are similar to $\triangle A B C$ .

2. Only $\triangle D E F$ is similar to $\triangle A B C$ .

3. Both $\triangle D E F$ and $\triangle G H I$ are similar to $\triangle A B C$ .

4. Neither $\triangle D E F$ nor $\triangle G H I$ are similar to $\triangle A B C$ .