### Slides and Handouts for

# Beautiful Geometric Diagrams and Connecting the Mathematics Beneath

Presentation at ICTM meeting – Oct. 19, 2018 at Tinley Park, IL. Presentation by Jim Olsen and Audrey Fletcher, Western Illinois University.

## Handouts

- Look For and Make Use of Structure in Geometry Often Means
- Triangles in a Trapezoid - 3
- Proof of Triangles in a Trapezoid - 3
- Overview of the Three Pythagorean Means
- The Three Pythagorean Means in a Circle
- Harmonic Mean Between Telephone Poles
- Proof of Harmonic Mean Between Telephone Poles
- Additional Geometry Problems Using the Structure-Symmetry-Similarity Strategy

## Website

Structure and Symmetry: Mathematical Reasoning: Connecting Geometry, Numbers, and Algebra (http://geometry.drjimo.net)

## Slides

Slides for **Beautiful Geometric Diagrams and Connecting the Mathematics Beneath**

Web site created by Jim Olsen.