Using a Simple Optical Rangefinder to Teach Similar Triangles
Paul Cuicchi, Paul Hutchison
March 2003, Volume 96, Issue 3, Page 166
How we taught the concept of similar triangles using an optical method of estimating large distances as a corresponding activity. The derivation of a formula to calculate one source of measurement error is included and is a nice exercise in the use of the properties of similar triangles.
Connections / Applications
Similarity / Congruence