Date: Dec 15, 1994 8:09 AM
Author: E7M2WAT@TOE.TOWSON.EDU
Subject: Classification of quadrilaterals

Here is a classification scheme found in "A Problem Solving Approach to 
Mathematics for Elementary School Teachers" by Billstein et al.

Quadrilateral
/ \
/ \
Kite Trapezoid
| / \
| / Isosceles
| Parallelogram
| / \ Trapezoid
| / \ /
\ / \ /
Rhombus Rectangle
\ /
\ /
\ /
Square

Any Comments?

Tad Watanabe
Towson State University
Towson, Maryland