Construction of Perpendicular using Rusty Compass/Historical Note

Historical Note on Construction of Perpendicular using Rusty Compass

This construction was discussed by Abu'l-Wafa Al-Buzjani in a work of his from the $10$th century.

Sources

• 1986: J.L. Berggren: Episodes in the Mathematics of Medieval Islam
• 1992: David Wells: Curious and Interesting Puzzles ... (previous) ... (next): Abul Wafa ($\text {940}$ – $\text {998}$): $43$