Huygens, Christiaan, Christiani Hugenii opera varia; Bd. 2: Opera geometrica. Opera astronomica. Varia de optica

Table of contents

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[71.] PROP. VI. THEOREMATA.
Page: 147 (420)
[72.] SCHOLIUM.
Page: 148 (421)
[73.] PROP. VII. PROBLEMA. Oportet prædictæ ſeriei terminationem invenire.
Page: 150 (423)
[74.] PROP. VIII. PROBLEMA.
Page: 152 (425)
[75.] PROP. IX. PROBLEMA.
Page: 153 (426)
[76.] PROP. X. PROBLEMA.
Page: 154 (427)
[77.] CONSECTARIUM.
Page: 155 (428)
[78.] PROP. XI. THEOREMA.
Page: 156 (429)
[79.] SCHOLIUM.
Page: 159 (432)
[80.] PROP. XII. THEOREMA.
Page: 161 (434)
[81.] PROP. XIII. THEOREMA.
Page: 161 (434)
[82.] PROP. XIV. THEOREMA.
Page: 162 (435)
[83.] PROP. XV. THEOREMA.
Page: 162 (435)
[84.] PROP. XVI. THEOREMA.
Page: 163 (436)
[85.] PROP. XVII. THEOREMA.
Page: 164 (437)
[86.] PROP. XVIII. THEOREMA.
Page: 164 (437)
[87.] PROP. XIX. THEOREMA.
Page: 165 (438)
[88.] CONSECTARIUM.
Page: 165 (438)
[89.] PROP. XX. THEOREMA.
Page: 165 (438)
[90.] PROP. XXI. THEOREMA.
Page: 166 (439)
[91.] PROP. XXII. THEOREMA.
Page: 167 (440)
[92.] SCHOLIUM.
Page: 168 (441)
[93.] PROP. XXIII. THEOREMA.
Page: 168 (441)
[94.] PROP. XXIV. THEOREMA.
Page: 169 (442)
[95.] PROP. XXV. THEOREMA.
Page: 170 (443)
[96.] PROP. XXVI. THEOREMA.
Page: 171 (444)
[97.] PROP. XXVII. THEOREMA.
Page: 172 (445)
[98.] PROP. XXVIII. THEOREMA.
Page: 173 (446)
[99.] PROP. XXIX. PROBLEMA. Dato circulo æquale invenire quadratum.
Page: 173 (446)
[100.] PROP. XXX. PROBLEMA. Ex dato ſinu invenire arcum.
Page: 175 (448)
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73361DE CIRCULI MAGNIT. INVENTA. rectis A D, D C & arcu A B C comprehenſum majus erit
portionis A B C dimidio. Ac proinde triangulum A D C
majus quam portionis A B C ſeſquialterum. Quod erat de-
monſtrandum.
Theor. V. Prop. V.
OMnis circulus major eſt pylogono æqualium
laterum ſibi inſcripto & triente exceſſus quo
id polygonum ſuperat aliud inſcriptum ſubduplo la-
terum numero.
Eſto circulus centro C; ſitque ipſi inſcriptum polygonum
11TAB. XXXVIII.
Fig. 5. æqualium laterum, quorum unum ſit A B. Atque alterum
item polygonum ſit inſcriptum, cujus bina latera A D, D B,
ſubtendat A B. Hoc igitur priore polygono majus eſt. Sit
autem exceſſus trienti æquale H ſpatium. Dico circulum ma-
jorem eſſe polygono A D B una cum ſpatio H. Ducantur
enim ex centro rectæ C A, C B. Quoniam igitur portio
circuli A D B major eſt quam ſeſquitertia trianguli A D B ſibi
inſcripti ; erunt portiones A D, D B, ſimul majores 22per. 3. huj. ente trianguli A D B. Quamobrem & ſector C A B major
erit utriſque ſimul quadrilatero C A D B & triente trian-
guli A D B. Sicut autem ſector C A B ad circulum totum,
ita eſt quadrilaterum C D B A ad polygonum A D B, &
ita quoque triens trianguli A D B ad trientem exceſſus po-
lygoni A D B ſupra polygonum A B. Ergo manifeſtum eſt
circulum quoque totum majorem fore polygono A D B una
cum triente exceſſus quo polygonum A D B ſuperat poly-
gonum A B, hoc eſt, unà cum ſpatio H. Quod erat demon-
ſtrandum.
Theor. VI. Prop. VI.
Omnis circulus minor eſt duabus tertiis polygo-
ni æqualium laterum ſibi circumſcripti & tri-
ente polygoni ſimilis inſcripti.

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