Machinists' and draftsmen's handbook, containing tables, rules and formulas, with numerous examples explaining the principles of mathematics and mechanics as applied to the mechanical trades; intended as a reference book for all interested in mechanical work (1910)
Lobben, Peder, 1858- · New York, D. Van Nostrand company · leaf 169
gle is called equilateral when all its three sides haveequal length. Then all the three angles are equal, namely, 60degrees, because 60 X 3.= 180. (See Fig. 4). * Some authorities define as polygons only figures having more than four sides. i5° GEOMETRY. A triangle is called a right-angled triangle… … Equilateral Triangle. Right-Angled Triangle. Acute Triangle. The longest side in a right-angled triangle is called thehypothenuse and the other two sides are called the base andperpendicular. The square of the length of the hypothenuse isequal to the sum of the squares of the lengths of the other…
Mechanical engineering
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-126-349.webp)
