Finding the Slopes and Relationship of a Triangle Midsegment

Published on September 8, 2026

Geometry

Learn how to find the slopes of a triangle's midsegment and its corresponding third side using coordinate geometry to determine if they are parallel.

Question

Answer

  1. Identify the coordinates of the endpoints of the midsegment (the blue line segment):
    The endpoints are and .
  2. Calculate the slope of the midsegment using the slope formula :
  3. Identify the coordinates of the endpoints of the third side (the side not connected to the midsegment):
    The third side connects the points and .
  4. Calculate the slope of the third side:
  5. Compare the slopes:
    Since both slopes are equal ( ), the lines are parallel.
Both slopes are , and there is a parallel relationship.