Teachers' manual for freehand drawing in Intermediate schools : intended to accompany the drawing-books for intermediate schools (1878)
Smith, Walter, 1836-1886 · Toronto, A. Miller · leaf 63
their angles. AYhile the comparativesizes of the three angles of the triangle vary asthe comparative lengths of the sides var^^, jct thecombined size of the three angles is always equal totwo right angles, or 180°. Show your pupils thatthis is so. A Right Triangle. — A triangle containing oneright… … base, the other the perpendicular. There is some-thing ver} curious abouttliis kind of triangle. Ifyou construct a square oneach of its sides, whatevermay be their comparativelengths, the square on thelongest side Avill always bejust as large as both of theother squares. If, as shownin the cut, the…
Drawing
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