DelMonte, Guidubaldo, In duos Archimedis aequeponderantium libros Paraphrasis : scholijs illustrata

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1ipsi AD æquidiſtantes, erit AE ad EB, vt DO ad OB; & vt
DZ ad ZC, ſic AF ad FC. at〈que〉 DO ad OB eſt, vt DZ ad
ZC. erit igitur AE ad EB, vt AF ad FC. quare EF ipſi BC
eſt æquidiſtans, eodemquè modo oſtendetur, ita eſſe AG ad

GB, vt AK ad KC, & AL ad LB, vt AM ad MC. ex quib^{9}
ſequitur LM GK EF non ſolùm ipſi BC, verùm etiam inter­
ſeſe parallelas eſſe.
ſecct EF lineas Gζ Kβ in Xε. ipſam verò
AD in T. lineaquè GK ſecet Lα Mω in Nδ, & AD in Y.
linea deniquè LM ipſam AD in S diſpeſcat.
Quoniam au
tem Dω eſt ipſi HI æquidiſtans, eſtquè Dω minor quam HI, li
nea ωM ipſi AL ęquidiſtans ipſam HI ſecabir.
ac propterea
punctum H centrum grauitatis trianguli ABC extra paral­
lelogrammum DM reperitur.
At verò quoniam LD DM
ſunt para lelogramma, erunt LS αD inter ſe æquales, ſimili­
ter SM Dω ęquales.
ſuntverò αD Dω ęquales: ergo & LS
SM inter ſe ſunt ęquales.
eademquè rarione NY Yδ inter ſe­
ſe, & ipſis LS SM ęquales exiſtent.
quarelinea SY bifariam
diuiditlatera oppoſita parallelogrammi MN. pariquè ratio­
ne oſtendetur lineam YT bifariam diuidere oppoſita latera
parallelogrammi KX; lineamquè TD latera oppoſita

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