**The midsegment of a triangle has three main properties:**

- The midsegment crosses exactly through the middle of the two sides that determine it.
- The midsegment is parallel to the third side of the triangle.
- The midsegment measures half the length of the side arranged parallel to it.

**Let's look at the properties of the midsegment of a triangle in the following illustration:**

If $AD=CD$

$AE=BE$

then $2DE=CB$

$DE∥CB$