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

Page concordance

< >
Scan Original
131
132
133
134
135
136
137
138
139
140 413
141 414
142 415
143 416
144 417
145 418
146 419
147 420
148 421
149 422
150 423
151 424
152 425
153 426
154 427
155 428
156 429
157 430
158 431
159 432
160 433
< >
page |< < of 568 > >|
139PRÆFATIO AD LECTOREM. lum hinc fructum colliges.
DEFINITIONES.
1 Si in circulo, ellipſe vel hyperbola ducantur è centro
in ejus perimetrum duæ rectæ, appellamus planum
ab illis rectis & perimetri ſegmento comprehenſum,
ſectorem.
2 Si perimetri ſegmentum inter illas rectas comprehenſum à
rectis quotcumque ſubtendatur, ita ut triangula rectili-
nea (quorum communis vertex eſt ſectionis centrum &
baſes rectæ ſubtendentes) ſint æqualia; vocamus rectili-
neum illud ab iſtis triangulis conflatum, polygonum re-
gulare inſcriptum, ſi ſectio conica fuerit circulus vel el-
lipſis; quod ſi fuerit hyperbola, vocamus illud rectili-
neum polygonum regulare circumſcriptum.
3 Si perimetri ſegmentum inter illas rectas comprehenſum à
rectis quotcunque tangatur & à tactibus ad ſectionis cen-
trum ducantur rectæ; ſi inquam omnia trapezia, a tan-
gentibus proximis & rectis ad centrum comprehenſa, fue-
rint æqualia; appello rectilineum ab illis conflatum, poly-
gonum regulare circumſcriptum, ſi ſectio conica ſit elli-
pſis vel circulus, & polygonum regulare inſcriptum ſi
fuerit hyperbola.
4 Si omnes anguli (excepto illo ad ſectionis centrum) po-
lygoni regularis à ſubtendentibus comprehenſi

Text layer

  • Dictionary

Text normalization

  • Original
  • Regularized
  • Normalized

Search


  • Exact
  • All forms
  • Fulltext index
  • Morphological index
Impressum