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ABCD altitude angle approaches axis base bisector bisects called centre chord circle circular circumference circumscribed coincide common cone construct contain corresponding curve cylinder denote describe diagonals diameter difference dihedral angles distance divided Draw drawn edges ellipse equal equidistant equilateral equivalent faces fall feet figure Find formed frustum given line given point greater half height Hence homologous inches included inscribed intersection isosceles joining lateral legs length less limit locus measured meet middle point opposite parallel parallelogram pass perimeter perpendicular plane polygon prism PROBLEM Proof proportional PROPOSITION prove pyramid quantities radii radius ratio rectangle regular polygon respectively right angle segments sides similar sphere spherical square straight line surface tangent THEOREM third touches triangle vertex vertices volume
Side 66 - If two triangles have two sides of the one equal respectively to two sides of the other, but the included angle of the first greater than the included angle of the second, then the third side of the first is greater than the third side of the second. Given A ABC and A'B'C...
Side 372 - Each side of a spherical triangle is less than the sum of the other two sides. Let ABC be a spherical triangle, AB the longest side.
Side 385 - If two angles of a spherical triangle are unequal, the sides opposite are unequal,, and the greater side is opposite the greater angle...
Side 191 - The areas of two triangles which have an angle of the one equal to an angle of the other are to each other as the products of the sides including the equal angles.
Side 360 - A sphere is a solid bounded by a surface all points of which are equally distant from a point within called the centre.
Side 383 - Hence the two last are right angles ; hence the arc drawn from the vertex of an isosceles spherical triangle to the middle of the base, is at right angles to the base, and bisects the vertical angle.
Side 75 - PERIPHERY of a circle is its entire bounding line ; or it is a curved line, all points of which are equally distant from a point within called the centre.
Side 150 - If two triangles have an angle of the one equal to an angle of the other, and the including sides proportional, they are similar. In the triangles ABC and A'B'C', let ZA = Z A', and let AB : A'B' = AC : A'C'. To prove that the A ABC and A'B'C