Struck-Out Circle-and-Semicircle Note
A crossed-out pair of figures restating that half the greater of two circles in double proportion equals the whole lesser
The verso is largely blank, with the geometry of the recto showing faintly through the sheet. At the lower left a small pair of struck-through figures (a circle above a semicircle) carries a note restating the theorem that in circles of double proportion half the greater equals the whole lesser. A few further faint lines of writing sit above these figures, not included in the transcription.
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Circles of double proportion (crossed out)
Beside a crossed-out circle drawn above a semicircle, Leonardo repeats the recto's key theorem: of circles in double proportion, half the greater equals the whole lesser. The figures are struck through, marking the note as cancelled.