Babbit, Arthur B · New York, H. Holt and company · leaf 182
teral having two andonly two of its sides par-allel. See Fig. 81. A parallelogram is aquadrilateral having itsopposite sides parallel.There are four kinds ofparallelograms: the rec-tangle, the square, the rhomboid,and the rhombus. A rectangle is a parallelogramwhose angles are all right… … Fig. 80
Mechanical drawing
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![An illustration from M. Vitrvvii viri svae professionis pertissimi De architectvra libri decem, ad Avgvstum Cæsarem accuratiss. conscripsit & nvnc primvm in Germania qva potuit diligentia excusi, atq[ue] hinc inde schematibus non iniucundis exornati (1543)](https://img.insideoutlibrary.com/img/200/ia-mvitrvviivirisva00vitr-259-90.webp)
