Graphics : a manual of drawing and writing, for the use of schools and families (1838)
Peale, Rembrandt, 1778-1860, author · Philadelphia : J. Whetham · leaf 34
28 MANUAL OF DRAWING. CURVES WITHIN ANGLES. … Curves are to be understood as they are proportioned by length and breadth, and cannot be more correctly imagined than as they may be found within certain straight or angular lines. It is not difficult to draw a circle within a regular figure of twelve equal sides ; but a still more improving…
Drawing -- Study and teaching · Penmanship -- Study and teaching
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
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