Letters in geometry

• Circumference-figuring figures
• TV's Magnum and others
• Magnum and others, for short
• Greek letters before rhos
• Magnum and Ellery Queen: Abbr
• Brief case handlers?
• Corinth consonants
• Many crime fiction protagonists, briefly
• Thomas Magnum and Sam Spade (abbr.)

Wikipedia Word definitions in Wikipedia
Pis is a commune in the Gers department in southwestern France .