Big Ideas Math Geometry, 2014
BI
Big Ideas Math Geometry, 2014 View details
4. The Triangle Midsegment Theorem
Continue to next subchapter

Exercise 10 Page 333

A midsegment connects two midpoints.

x=8

Practice makes perfect

We are told that DE is a midsegment of â–ł ABC. This means that D is a midpoint of AB and E is a midpoint of BC.

Therefore, BE and EC have equal lengths. This allows us to write an equation. BE=EC Now, we can find the value of x by substituting the given values into this equation.
BE=EC
x= 8