Marci of Kronland, Johannes Marcus, De proportione motus figurarum recti linearum et circuli quadratura ex motu, 1648
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              lis IL chordæ grad: 60. cuius ſinus rectus AO; atq, huius
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              complementum OK minus ſemiſse radij. </s>
              <s>Quòd ſi orbiculus
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              E tangat A inter L&K; erit minor huius plaga, quàm OK
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              ptopterea quòd DE fiat maior quàm AD, & IL maior quàm
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              AI: ac proinde AO maior ſinu grad: 60. </s>
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              COROLLARIVM.
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              <s>Idem verò ſequitur, ſi orbiculi C. D. E aſſumantur mino­
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              res, quàm ſit A. propterea quòd hi ex impulſu minori move­
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              antur, quàm orbiculi æquales, per poriſ: 2. </s>
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              PROBLEMA IV.
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              Tres orbiculos percutere eadem plagâ: qui in motu percutiant alios
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              tres quolibet intervallo ſeiunctos: â quibus rurſum alij tres percutian­
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              tur in quouis ſitu.
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              <s>Sint tres orbiculi in ſltu
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              a.b.c:
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              quos alij
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              g.h.i
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              percutere de­
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              bent in motu: à quibus rurſum alij tres
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              d.e.f
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              percutiantur: a </s>
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