Trèteaux Angles: P11m-DP
 P11m-DP = Main Side Jack Rafter Bevel Angle On Top Edge Face Set in Roof Surface
 Hip-Valley Roof Ratios Angle Formulas
- P11m-DP = Jack Rafter Side Cut Angle
- P11m-DP= P2m
 
 
 
 
The Trèteaux Angles Formulas for Hip Rafters Rotated into the Roof Surface Plane were developed by Sim Ayers and Joe Bartok.