Improve exam questions: fix errors, add diagrams, enrich content

Matthias Nott

5 days ago c40193824567e2d3fe01d1854382c44fadc0a636

 SPL Exam Questions EN/figures/t30_q17.png
similarity index 100%rename from SPL Exam Questions EN/figures/t30_q17.pngrename to SPL Exam Questions EN/figures/glide_angle_geometry.pngBinary files differ