The Triangle Midsegment Theorem tells us that if a segment joins the midpoints of two sides of a triangle, then it is parallel to the third side of the triangle and its length is one-half the length of that side.
11
Practice makes perfect
We are given a triangle △KLM and its midsegment JH. Let's find the value of x.
The Triangle Midsegment Theorem tells us that if a segment joins the midpoints of two sides of a triangle, then it is parallel to the third side of the triangle and its length is one- half the length of that side.
JH=1/2 KM
Finally, we will substitute the given values into this equation to find x.
x=1/2( 22) ⇔ x=11
