A triangle cut by a parallel to its base
'Second' figure: triangles divided by a parallel and crossing lines
Headed 'Second', this pencil page continues the study of triangles divided proportionally. One triangle is cut by a line parallel to its base and by crossing lines, lettered a, d e and b c; a further triangle is lettered a, b with a b as its base. Show-through from adjacent leaves overlays the faint drawing.
On this page
'Second' — continuation of the proportion study
The page opens with the heading 'Second', marking it as the next figure in the sequence of proportional triangle constructions.
Triangle cut by a parallel to the base and crossing lines
A triangle is divided by a line parallel to its base and by lines that cross within it, its parts lettered a, d e and b c.
Second triangle with base a b
Another triangle is lettered a, b, with the segment a b designated as its base.