Content Ready· High Priority· natural-history· Ages 14+
The Law of Cosines
Generalising Pythagoras to All Triangles
Visual Approach
Triangle diagram with geometric proof of c² = a² + b² − 2ab·cos(C)
Designs

poster-A3-portrait
comprehensive · natural-history
3508 × 4961px @ 300dpi
Production Notes
HTML file.