You might like Left Right Lecture Diagram: Anamorphic Perspective Joseph Mallord William Turner c.1817–28 Lecture Diagram: The Nature of Lines, Parallels, Right Lines, Various Angles and a Square Joseph Mallord William Turner c.1817–28 Lecture Diagram: Three Squares, Intersected Joseph Mallord William Turner c.1817–28 Lecture Diagram: Two Equilateral Triangles Joseph Mallord William Turner c.1817–28 Lecture Diagram: Two Octagons Joseph Mallord William Turner c.1817–28 Lecture Diagram: Perspective Method for a Circle Joseph Mallord William Turner c.1822–8 Lecture Diagram 39: Perspective Method for a Circle (after Jacques Androuet du Cerceau) Joseph Mallord William Turner c.1810 Lecture Diagram 40*: Perspective Method for a Circle (after Thomas Malton Senior) Joseph Mallord William Turner c.1810 Lecture Diagram: Various Figures Joseph Mallord William Turner c.1817–28 Lecture Diagram: Figure, with Outstretched Arms and Legs, Enclosed within a Circle: Front View Joseph Mallord William Turner c.1812–28 Lecture Diagram: Colour Circle No.1 Joseph Mallord William Turner c.1824–8 Lecture Diagram: Colour Circle No.2 Joseph Mallord William Turner c.1824–8