Clavius, Christoph
,
Geometria practica
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GEOMETR. PRACT.
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<
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quia eſt, vt AB, ad AD, ita CF, ad FD: </
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dupla; </
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quia eſt vt AF, ad FH, ita triangulum A F B, ad
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BFH: </
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<
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trianguli B F H, duplum. </
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FH, duplum; </
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æquale erit: </
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tertium.</
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facilè inueniri poteſt punctum intra triangulum, à quo tres rectæ
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ad tres angulos ductæ ipſum triungulum in tria æqualia triangula partiantur.
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bus quibuſuis angulis ad media puncta oppoſitorum laterum ductæ ſe interſe-
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cant, vt in tertia parte huius propoſ. </
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triangulum ad abſciſſum triangulum, vt rectangulum ſub duobus la-
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teribus ſectis totius trianguli comprehenſum, ad rectangulum ſub
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duobus lateribus trianguli abſciſſi, quæ priorum ſegmenta ſunt, com-
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prehenſum.</
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triangulo ABC, recta D E, ſecet latera A B, A C, in D, E. </
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ctangulum ſub AB, AC, adrectangulum ſub AD, AE, ita tri-
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angulum ABC, ad triangulum ADE. </
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la ABC, ADE, angulum habent communem A; </
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propoſ. </
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tionem, quamrectangula ſub lateribus AB, A C, & </
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AE, comprehenſa. </
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tes æquales diuidere.</
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<
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quartadecima ſcholij propoſ 33. </
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mus regulam, qua triangulum in duas partes ſecundum datam proportionem
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diuidendum ſit: </
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tur triangulum ex dato puncto in eius latere quouis ſecandum ſit in </
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