Studies of 45-degree angles and two framed figures
Red-chalk sketches: lines radiating to form 45-degree angles above two window-like framed figures
Two groups of lightly drawn red-chalk sketches fill the leaf. Near the top a spray of straight lines radiates from a point along a horizontal to form angles of 45 degrees. Below are two upright framed figures divided by vertical bars, which the transcription leaves undetermined.
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Lines radiating to form 45-degree angles
Near the top of the leaf a set of straight lines fans out from a common point along a horizontal, splitting the angle into equal parts. The transcription reads this as the construction of 45-degree angles.
Two indeterminate framed figures
Below are two upright rectangular figures, each crossed by vertical bars so that they resemble window frames or grilles. The transcription leaves their subject undetermined.