Proceedings of the Edinburgh Mathematical Society, Volume 2
Scottish Academic Press, 1884 - Electronic journals
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acid adiabatic arcs atoms bars base bisects centre circle coincide conic considered constant construction contained continuous contour-lines corresponding crystals curve Desargues determine diagonal diminishes direction disques double draw drawn Edinburgh elector elements equal Euclid evidently external figure fixed formed Geometry given gives greater Hence hexagon increase indicated inscribed intersection isothermal joining length less meet moves MUIR obtained opposite sides optical original pair parallel parallelogram pass perpendicular plane polar pole position pressure problem produced Professor projective proof properties Proposition proved quadrant quadrilateral quantity region remain represents result right angles segments sides Similarly small circles solid space sphere spherical triangle square straight line substance Suppose surface tangents temperature termed theorem third tour triangle vertices volume voting
Page 11 - Any two sides of a triangle are together greater than the third side.
Page 15 - The perpendiculars from the vertices of a triangle on the opposite sides are concurrent.
Page 11 - The opposite angles of a quadrilateral inscribed in a circle are together equal to two right angles, with converse.
Page 8 - The straight line, joining the points of bisection of two sides of a triangle, is parallel to the base.
Page 35 - The contour-line for a level immediately underneath that corresponding to the bar has a closed branch within the region of depression cut off. Thus the closed curve at I4, Fig. 24, is part of the contour-line ux. If a chart of an insular high-land be constructed as above indicated, a pass occurs at the node (see Fig. 24) of a figure-of-eight curve, (or out-loop curve, as Professor Cayley has termed it) ; while a bar occurs at the node of an in-loop curve. If, in Fig. 24, we interchange the summits...
Page 10 - В А С is equal to the angle В А' С, the angle BAG is likewise equal to the angle ED F. Therefore, &c. PROP. 1C. If two spherical triangles have the three angles of the one equal to the three angles of the other, each to each...
Page 13 - From this it follows at once, that the locus of the vertex of a triangle of constant area on a fixed base is a small circle.
Page 53 - If a perpendicular be drawn from the right angle to the hypotenuse of a right-angled triangle, and circles...
Page 16 - The perpendiculars from the vertices on the opposite sides of a triangle bisect the angles of the triangle formed by joining the feet of the perpendiculars.
Page 3 - This address will be found in The London, Edinburgh, and Dublin Philosophical Magazine and Journal of Science for January 1884, Fifth Series, vol.