The théorème de Thales and its applications in geometric problem-solving, focusing on parallel lines and proportional segments in nested triangles.
- Demonstrates how to verify if lines are parallel using the triangles ABC CDE emboîtés (nested triangles) and ratio comparisons
- Shows practical application of Thales' theorem through worked examples with specific measurements
- Includes step-by-step calculations to vérifier égalité de rapports géométriques (verify equality of geometric ratios)
- Explores both the direct theorem and its reciprocal for proving parallel lines
- Incorporates real-world measurements and precise mathematical calculations
