Descriptive geometry for students in engineering science and architecture; a carefully graded course of instruction (1915)
Armstrong, Henry F. (Henry Fry), 1868- · New York, J. Wiley & sons, inc.; [etc., etc.] · leaf 76
ner from the opposite face is theheight of the solid. The simplest way by which to find*the height of any tetra-hedron is to place it on the H.P., as shown at (iii), and then, since all of its edgesare equal, and the edge ^-B is parallel to the V.P., ah shows true length, its planbeing at ah. The… … Fig. 68. the solid has three diagonals at right angles to one another, and each one thereforeat right angles to the plane of the two others. The simplest way to arrange this solid is shown at (iv) in Fig. 68, where thefull height in the elevation is made equal to a diagonal o^ the square…
Geometry, Descriptive
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