Minimum Distance to Line from 3 Points

This example demonstrates how to find the minimum distance from three points to a line using GeoGebra. Key math concepts include coordinate geometry, vectors, optimization, and Lagrange multipliers. Construction highlights involve commands like Element for points and objects such as eq1, A, B, C, ϕ, l1, P, distanceFromD, S, S2, DistP, text2, text1. Suitable for high school and above learners exploring spatial geometry and optimization problems.