A series of 16 variations on Prisma, accompanied by another 6 shaded styles. Prisma Graphic A stays closest to Koch’s original, but has 8 lines instead of 5. Futura Prisma G is the same, but is closed at the ends. Bauhaus Prisma / Prisma Bauhaus is a related series with round forms e.g. for ‘AEMNY’, a half-circle ‘C’ and a two-quarter-circle ‘S’.