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A breefe treatise of sphæricall triangles
wherein is handled the sixteene cases of a right angled triangle, being all extracted out of one diagram, and reduced into theorems, with the totall sine in the first place, so that by addition onely, they may be effected : as also, the twelue cases of an oblique sphæricall triangle, being likewise reduced into theorems, whereby with one or two additions at the most, any of them may be resolued by helpe of this canon following made with secants, and that only by such numbers as are therein to be founde, without first making any substraction, or vsing any mentall operation -
A geometricall extraction, or A compendious collection of the chiefe and choyse problemes, collected out of the best, and latest writers
VVhereunto is added, about 30. problemes of the authors inuention, being for the most part, performed by a better and briefer way, then by any former writer -
A geometricall extraction, or A compendious collection of the chiefe and choyse problemes, collected out of the best, and latest writers
VVhereunto is added, about 30. problemes of the authors inuention, being for the most part, performed by a better and briefer way, then by any former writer. By Iohn Speidell, practitioner in the mathematicks, and professor thereof in London -
A geometricall extraction. or, A compendious collection of the chiefest and choisest problemes
selected out of the best and latest writers : whereunto are added above thirty problemes of the authors own invention, being performed by a better and briefer way than hitherto hath been made known