Cubes on a triangular prism, Pythagoras, and tangent-secant circles
Two cubes on a prism, a cube and its eighth, the Pythagorean figure, and two circles with tangent and secant from one point
The leaf is filled with geometrical figures: two cubes set against two faces of a triangular prism, and a cube shown together with an eighth of itself. Plane constructions accompany them, namely a figure of the theorem of Pythagoras and two circles crossed by a tangent and a secant drawn from a single point. No text is transcribed for this page, and further handwritten notes on the sheet remain untranscribed here.
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Two cubes on a triangular prism; a cube and its eighth
The sheet shows two cubes applied to two faces of a triangular prism. A cube is also presented together with an eighth part of the same solid.
Pythagorean figure and tangent-and-secant circles
Plane figures include the figure of the theorem of Pythagoras. Two circles are crossed by a tangent and a secant drawn from one and the same point.