Perimeter of Triangle Example 1 (Section 1.4)

This GeoGebra example demonstrates how to construct a triangle and compute its perimeter. The core mathematical concept is the definition and calculation of a triangle's perimeter as the sum of its three side lengths. Construction steps: use the Segment command to create the three sides labeled f, g, h, with vertices D, E, F; a text object (text1) displays the resulting perimeter value. Suitable for middle school geometry lessons to help students visualize perimeter and learn basic GeoGebra construction tools.