
05711011
j
2010c.00326
Lavy, Ilana
Shriki, Atara
Small change  big difference.
Mont. Math. Enthus. 6, No. 3, 395410 (2009).
2009
Information Age Publishing (IAP), Charlotte, NC; Department of Mathematical Sciences, The University of Montana, Missoula, MT
EN
G40
affine geometry
problem solving
problem posing
triangle theorems
generalizations
Summary: Starting in a well known theorem concerning medians of triangle and using the `What If Not?' strategy, we describe an example of an activity in which some relations among segments and areas in triangle were revealed. Some of the relations were proved by means of Affine Geometry.