Circle-and-quadrant figures and area equalities
Squaring curved figures, with a column of numbers and a fragment of prose
The sheet is filled with geometric constructions — circles set in squares, quadrants, and lune-like figures formed by semicircles laid on quadrants — exploring how curved areas can be made equal, as in 'a half equal to a quarter makes m equal to n,' the reasoning then continued for a quarter and an eighth. A short column of figures stands in the lower margin. At the top are a fragment of prose ('Tell me whether ever a thing was made ...') and the words 'In bread.'
On this page
A half made equal to a quarter
On a semicircle set over a quadrant, a half taken equal to a quarter makes m equal to n. The note continues for a quarter equal to an eighth, part of a study of equal areas among curved figures.
A quadrant divided into sectors
A quadrant of a circle is divided into sectors and lettered b, a. It is one of several circle-and-quadrant figures worked across the sheet.
A column of numbers in the lower margin
Set apart from the geometric constructions, a short column of figures is written in the lower margin: 43, then 2, 1, 3, 9, 3, 6, 2, 6, 2, 9, 9. No accompanying words explain the calculation.