DescriptionCylindrical coordinates basic.svg English: Basic illustration of the cylindrical coordinate system. The coords "(ρ,φ,z)" display as "(,,)ρφz"...
svg|Gnomonic triangle File:Bettini(1660)-(2).svg|Circle marked each 30° File:Bettini(1660)-(3).svg|Construction Lines File:Bettini(1660)-(4).svg|Hour...
svg|Gnomonic triangle File:Bettini(1660)-(2).svg|Circle marked each 30° File:Bettini(1660)-(3).svg|Construction Lines File:Bettini(1660)-(4).svg|Hour...
svg|Gnomonic triangle File:Bettini(1660)-(2).svg|Circle marked each 30° File:Bettini(1660)-(3).svg|Construction Lines File:Bettini(1660)-(4).svg|Hour...