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" Theorem. If two spherical triangles on the same sphere, or on equal spheres, are equilateral with respect to each other, they are also equiangular with respect to each other. "
A Treatise on Spherics: Comprising the Elements of Spherical Geometry, and ... - Pagina 43
door Daniel Cresswell - 1816 - 294 pagina’s
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Elements of Geometry

Adrien Marie Legendre - 1825 - 224 pagina’s
...line AD from the vertex A to the point D the middle of the base BC ; the two triangles ABD, ADC, will have the three sides of the one, equal to the three sides of the qther, each to each, namely, AD common to both, AB — AC, by hypothesis, and BD = DC, by construction...
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Geometry, Plane, Solid, and Spherical, in Six Books: To which is Added, in ...

Pierce Morton - 1830 - 272 pagina’s
...the three angles of the one equal to the three angles of the other, each to each, they shall likewise have the three sides of the one equal to the three sides of the othrr, each to each, viz. those which are opposite to the equal angles.* Let the spherical triangles...
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Library of Useful Knowledge: Geometry, plane, solid, and spherical [by ...

1835
...and С с ; draw P О perpendicular to Ce; and join OQ. Then, because the triangles С P с, С Q с have the three sides of the one equal to the three sides scribe two circles, and kt them cut one another in P; and from P draw PM perpendicular to А В : then...
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An Elementary Treatise on Plane and Solid Geometry

Benjamin Peirce - 1837 - 159 pagina’s
...and, by transposition, A> B+ C— 360 + 180, or A > (B + C) — 180, as we wished to prove. 449. Theorem. If two spherical triangles on the same sphere, or on equal sphere?, are equilateral with respect to each other, they are also equiangular with respect to each...
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An Elementary Treatise on Plane and Solid Geometry

Benjamin Peirce - 1841 - 150 pagina’s
...and, by transposition, A>^-B1C — 360 + 180, or *9>(5+ C) — 180, as we wished to prove. 449. Theorem. If two spherical triangles on the same sphere, or on equal spheres, are equilateral with respect to each other, they are also equiangular with respect to each other. Proof....
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An Elementary Treatise on Plane and Solid Geometry

Benjamin Peirce - 1847 - 150 pagina’s
...by transposition, A > -f- BC — 360 + 180, or A>(B + C)— 180, as we wished to prove. 449. Theorem. If two spherical triangles on the same sphere, or on equal spheres, are equilateral with respect to each other, they are also equiangular with respect to each other. Proof....
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Elementary Geometry: With Applications in Mensuration

Charles Davies - 1850 - 216 pagina’s
...chord, and the arc AE equal to EB. First. Draw the two radii CA, CB. Then the two triangles A CD, DCS, have the three sides of the one equal to the three sides of the Of the Circle. B other, each to each : viz. AC equal to CB, being radii, AD equal to DB, by hypothesis,...
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ELEMENTARY GEOMETRY, WITH APPLICATIONS IN MENSURATION.

CHARLES DAVIS, L.L. D. - 1850
...chord, and the arc AE equal to EB. First. Draw the two radii CA, CB. Then the two triangles A CD, DCB, have the three sides of the one equal to the three sides of the *Note. When reference is made from one theorem to another, in the same Book, the number of the theorem...
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Elements of Geometry and Trigonometry: With Applications in Mensuration

Charles Davies - 1855 - 324 pagina’s
...chord, and the arc AE equal to EB- ^ First- Draw the two radii CA, CBThen the two triangles A CD, DCB, have the three sides of the one equal to the three sides of the *Note- When reference is made from one theorem to another, in the same Book, the number of the theorem...
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Harvard Examination Papers

1873 - 164 pagina’s
...that similar prisms, or pyramids, are to each other as the cubes of their altitudes. 5. Prove that if two spherical triangles on the same sphere, or on equal spheres, are equilateral with respect to each other, they are also equiangular with respect to each other. LOGARITHMS...
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