Worst, Edward F. (Edward Francis), 1866-1949, Barber, Harriette, [from old catalog] joint author, Seymour, Marian, [from old catalog] joint author · Chicago, A. W. Mumford and company · leaf 59
-ing paper or mimeograph paper. Made for the purpose of teaching the equilateral triangle. Present model and then unfold to show that all sidesand the large triangle of which they are composed areequilateral triangles. Draw a line 6 inches long. With the circle-maker and a distance equal to the… … jacent points. Draw small flap for paste. Crease lines tobe folded with back edge of scissors. Draw a number of equilateral triangles of various sizes.
Manual training · Paper work · Basket making
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
![An illustration from Divina proportione : opera a tutti glingegni perspicaci e curiosi necessaria oue ciascun studioso di philosophia: prospettiua pictura sculptura: architectura: musica: e altre mathematice: suavissima: sotile: e admirabile doctrina consequira: e delecterassi: co[n] varie questione de secretissima scientia (1509)](https://img.insideoutlibrary.com/img/200/ia-divinaproportion00paci-274-449.webp)
![An illustration from Libro primo [-quinto] d'architettvra ... (1566)](https://img.insideoutlibrary.com/img/200/ia-libroprimoquinto00serl-81-102.webp)
