Posted by Anthony on .
Given triangle ABC with vertices A(6, 2), B(2,8), and C(6, 2). Line AB has midpoint D, line BC has midpoint E, and line AC has midpoint F.
Which of the following statements is true?
1. ADEF is only a parallelogram
2. ADEF is a rhombus
3. ADEF is a rectable but not a parallelogram
4. ADEF is not a parallelogram

Geometry Please Help! 
Steve,
(1) because while AD  EF, AD=6 and AF = √41