Geometria pura elementare, per S. Pincherle.

54 Geometria piana. OD, OE eguali come raggi, quindi nei triangoli isosceli OCD, OCE sara (1) OCD O(DC, OCDL OEC, onde ODC z- OEC: ma questi angoli hanno posizione di corrispondenti, talch6 OD, OE sarebbero parallele, il che e assurdo poich6 esse concorrono in 0. 0 A C D E B Fig. 42. 'I'FOIEMA 2. La retta die passa per il centro di un cerchio ed e perpendicolare ad una corda, divide la corda stessa per meta. Si abbassi dal centro O la perpendicolare OM alla corda AB: i triangoli OMA, OMB sono eguali come rettangoli aventi OM comune ed OA-OB (2) onde AM = MB (1) ~ II, teor. 3. (2) ~ VI, teor. 6, coroll.

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Title
Geometria pura elementare, per S. Pincherle.
Author
Pincherle, Salvatore, 1853-1936.
Canvas
Page 52
Publication
Milano,: U. Hoepli,
1895.
Subject terms
Geometry

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"Geometria pura elementare, per S. Pincherle." In the digital collection University of Michigan Historical Math Collection. https://name.umdl.umich.edu/acv2273.0001.001. University of Michigan Library Digital Collections. Accessed May 1, 2025.
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