Dilation-Based Splitting of Triangle Sides (Part 2) (1)

This GeoGebra lesson demonstrates how to split the sides of a triangle by a given ratio using a dilation (scaling) transformation, keeping similarity and the proportionality of corresponding segments visible in the construction. The key mathematical ideas are dilation as a geometric transformation, similar triangles, ratio (proportional) division points on segments, and rigorous geometric construction with visual verification of equal-direction and proportional-length relationships. The provided source contains no GeoGebra construction summary, so no specific commands or objects can be extracted from it; however, the standard approach is to create images of points under dilation and then draw the lines/segments that determine the split side portions. Suitable for middle to high school geometry instruction, transformation-focused lessons, and advanced practice where learners connect similarity with constructive methods.