Orthogonal projections of our newest geometric addition: Duodecedron Abscisus Vacuus or Icosidodecahedron. ✏️📏📐 One of the Archimedean Duals as drawn by Leonardo Da Vinci for Pacioli's book "De Divina Proportione". Available from July 2nd, also released Faerybeads Mouse and Seahorse beads.
De divina proportione is a book on mathematics written by Luca Pacioli and illustrated by Leonardo da Vinci, composed around 1498 in Milan and first printed in 1509. Its subject was mathematical proportions (the title refers to the golden ratio) and their applications to geometry, visual art through perspective, and architecture. The clarity of the written material and Leonardo's excellent diagrams helped the book to achieve an impact beyond mathematical circles, popularizing contemporary geometric concepts and images.