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_Probl_. VIII.
Sit figura quævis ADB (rectis DA, DB, &
linea AMB com-
11Fig. 190. prehenſa) & à Dutcunque projectâ rectâ DM, datum ſit ſpatium
ADM; oportet rectam DM definire.
11Fig. 190. prehenſa) & à Dutcunque projectâ rectâ DM, datum ſit ſpatium
ADM; oportet rectam DM definire.
Acceptâ quâpiam R, ſit DZ = {2 ADM/R};
&
ZO curvæ AZK
perpendicularis; cui occurrat DH ad DM perpendicularis;
erit DM = √ R x DO.
perpendicularis; cui occurrat DH ad DM perpendicularis;
erit DM = √ R x DO.
_Aliter_.
Sit DZ = √ 4 ADM;
&
ZO curvæ AZK perpen-
dicularis; cui occurrat DH ad DZ perpendicularis; erit DM
= √ DZ x DO.
dicularis; cui occurrat DH ad DZ perpendicularis; erit DM
= √ DZ x DO.