01 · MID-POINT THEOREM
Theorem 8.9 (Mid-point Theorem)
The line segment joining the mid-points of two sides of a triangle is parallel to the third side and equal to half of it.
THEOREM STATEMENT
Mid-point Formula Representation
In △ABC, if E is the mid-point of AB and F is the mid-point of AC, then:
EF ∥ BC and EF = 1/2 BC
02 · CONVERSE OF MID-POINT THEOREM
Theorem 8.10 (Converse)
The line drawn through the mid-point of one side of a triangle, parallel to another side, bisects the third side.