Circle-arcs, segments and joined rectangles
Three arcs and a double portion; four segments a-d; two joined rectangles
The page combines three arcs of a circle with a doubled portion, a row of four segments lettered a to d and marked 16, 8, 4 and 2 (with 32), and two joined rectangles bearing the figures 32, 16, 8, 4 and 2. The numbers extend the halving progression 8, 4, 2 and its doublings that run through these folios. Drawn in pencil, with a page-number (151) in the corner.
On this page
Three arcs of a circle and a double portion
Three circular arcs are drawn together with a doubled portion, a lune-like piece cut from the circle. The figure studies areas bounded by circular arcs.
Four segments lettered a to d with lengths 16, 8, 4, 2
Four segments are marked a 16 ; b 8 ; 32 32 ; c 4 ; d 2, dividing the lines in continued proportion. The lettered lengths halve step by step from 16 down to 2.
Two joined rectangles with measures
Two rectangles are joined and labelled 32 2 - 16 and 8 - 4 32, relating the sides or areas of the figures to the same numerical series.