Harmonic Mean In Trapezoid
- Author:
- James R Olsen
- Topic:
- Trapezoid
ABCD is a trapezoid.
Segments AC and BD are diagonals meeting at E.
Segment HI goes through E and is parallel to the bases.
Prove: HI is the harmonic mean of AB and CD.
[Note: The Harmonic Mean of two numbers and is .]