Lesson 6 - Midsegments of Triangles In Lesson 6, we, thankfully, learned about a new topic. This lesson taught us about the midsegment of a triangle. Now, I won't explain what this is, because there are other people to do that job, but I will say that we learned the various properties about midsegments, and especially how we can use them in math problems. We were also introduced to some new terminology in this lesson such as the altitude, median, and centroid of a triangle. Yet, despite all the new stuff, there was 1 thing that was similar to the previous lessons. It is the fact that we vaguely learned how to use the new information we gained in this lesson in proofs or when you are proving something.