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The Description and Use of the Sector (1624)

Gunter, Edmund · leaf 89

An illustration from The Description and Use of the Sector, 1624, leaf 89
o they fhall giue the quantitie of the angle oppofite to thefecond fide. 17 T& T3^ fti/www» oj ngm-itM mingles. 17 Tofinde an Angle by htuing two fides^And the angle contained by them. Firft find the third fide by the n.Prop. and then the an-gles may be found by the 15-.or 16.Prop. For… … For obfctvtktion of angles, the Setter may haue fights kton the moueable foote 5 To that by looking through them,the edges of the Seftor may be applied to the fides of theangle. For For meafuring of the tides of letter tri-angles, any fcalemay fuvTicc,cither of feete,or inches, or letter parts. But…

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