- 1. If the lengths of every one-dimensional slice are equal for two regions, then the regions have equal Areas.
- 2. If the Areas of every two-dimensional slice (Cross-Section) are equal for two Solids, then the Solids have equal Volumes.

**References**

Beyer, W. H. (Ed.) *CRC Standard Mathematical Tables, 28th ed.* Boca Raton, FL: CRC Press, p. 126 and 132, 1987.

© 1996-9

1999-05-26