Geometric division of a circle into sectors and segments
Radial, banded and triangular subdivisions within a large circle
The sheet is dominated by a large compass-drawn circle whose lower quadrants are worked out geometrically. At lower left a quarter-sector is ruled with radial lines and a subdivided curved band set against a square grid, while at lower right the band is broken into a row of triangular zigzag segments; a small six-petalled rosette of overlapping circles sits near the centre. The e-Leo record notes the sheet bears no writing, so no text accompanies these constructions. They belong with the study of dividing the circle that continues on the following folios.
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Quadrants of a large circle subdivided by radii and segments
A large circle is drawn with a compass. Its lower-left quadrant is filled with radial lines and a curved band divided into cells against a square grid, and its lower-right quadrant carries a band broken into a row of triangular zigzag segments. The construction studies how the circle and its sectors may be divided into equal parts.
Rosette of six overlapping circles
Near the centre a small six-petalled rosette is formed by circles of equal radius overlapping around a central circle. The figure is the seed of the hexagonal division of the circle explored on the related sheets.