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Alberti, Leon Battista; Mancini, Girolamo [Hrsg.]
Leonis Baptistae Alberti Opera inedita et pauca separatim impressa — Florentiae: G.C. Sansoni, editor, 1890

DOI Seite / Zitierlink:
https://doi.org/10.11588/diglit.69994#0079
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ELEMENTA PICTUR/E

63

De angularibus flexilineis comminutis.
Idem erit eruditionis ordo in comminutis flexilineis angu-
laribus qui fuit in rectilineis; nam ab illis iste deducuntur,
aliqua tamen referentur, qutc angularibus flexilineis confe-
rant.
1. Datam circuii partem comminutam intra rectangulam
concentricam scribere.
2. Circularem aream comminutam intra rectangulam con-
centricam scribere.
3. Comminutam aream circularem intra qualemcumque
dederis aream, angularem exscribere.
4. Aream concentricam angularem circumcludere commi-
nuta circulari.
5. Circumcludere aream angiilarem comminutam area cir-
culari comminuta.
6. Intra circularem comminutam punctum commensuratum
adnotare.
7. Intra comminutam aream circularem, alteram commi-
nutam circularem inscribere.
8. Extra comminutam circularem punctum commensura-
tum adnotare.
9. Circumcludere aream circularem comminutam altera
circulari.
10. Aream circularem comminutam proportionaliter ma-
j orem excribere.
11. Intra inscriptam aream comminutam proportionalem
majorem,1 punctum commensuratum adnotare, atque perinde
alteram aream istiusmodi comminutam inscribere.
12. Circularem aream comminutam proportionalem mino-
rem inscribere.
13. Qualescumque dederis superficie», seu concentricas, seti
comminutas, alteras alteris inclusas, seu exclusas, seu conjun-
ctas, seu disjunctas persimiles eis areas, aut velis compare»,

1 Ambr. Riccardianus et Magliabechianus minorerà.
 
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