Medieval & Renaissance Manuscripts

La pratica de mesurar le terre
Italy, Venice, second half of the 16th century
MS B.15 fol. 6v

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Three diagrams of triangles:
1) Two isoceles triangles, one labelled ORTH(O)GONIO, the other labelled TRIANG(OL)O ORTHOGONIO.
2) Triangle labelled TRIANG(OL)O AMBLIGONIO.
3) Three triangles each labelled OXIGONIO.