# Exploring GeoGebra for the First Time

- Author:
- Tim Brzezinski, Mr. B. , Steve Phelps, GeoGebra Team

- Topic:
- Mathematics

## In this colorful picture below, move the colored points around. What do you notice? What do you wonder?

## Fill in one digit per box below to create a triangle that is a right triangle. Can you do so without repeating digits?

## Shown below is a mystery number we'll call "r". Move the points around. As you do, carefully observe how the value for "r" changes.

In the app above, arrange the points so that ** r **is as high as it possibly can be. What is this highest possible value for

*r*?