How to teach paper-folding and cutting: a practical manual-training aid (1892)
[Litchfield, Norma MacLeod] [from old catalog] · Lebanon, Ohio, March brothers · leaf 20
Tig. tlo. /^ LINES AND ANGLES. 17 triangle receives the name right-angled triajtgle.Various styles of triangles are seen in the different … % Ho. /3 designs, and the terms aaite and obtuse may be usedto designate the angles in them. In talking of draw-ing the lines, use the terms oblique^ vertical^ and /<?;--pendicular until the children can distinguish them ata glance. In figure No. 18 a chance occurs to teachthe term octagon, also…
Paper work
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
![An illustration from Woodward's architecture, landscape gardening, and rural art. no. I.--1867 [-no. II.--1868] (1872)](https://img.insideoutlibrary.com/img/200/ia-woodwardsarchite01wood-123-136.webp)
![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-157-383.webp)