Plane and Solid GeometryAmerican Book Company, 1907 - 412 σελίδες |
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Σελίδα 370
... SPHERICAL TRIANGLES 740. A spherical triangle is a portion of the surface of a sphere bounded by three arcs of great circles . The bounding arcs are the sides of the triangle . The intersections of the sides are the vertices of the triangle ...
... SPHERICAL TRIANGLES 740. A spherical triangle is a portion of the surface of a sphere bounded by three arcs of great circles . The bounding arcs are the sides of the triangle . The intersections of the sides are the vertices of the triangle ...
Σελίδα 371
Edward Rutledge Robbins. 741. A birectangular spherical triangle is a spherical triangle , two of whose angles are right angles . A trirectangular spherical triangle is a spherical triangle all of whose angles are right angles . The unit ...
Edward Rutledge Robbins. 741. A birectangular spherical triangle is a spherical triangle , two of whose angles are right angles . A trirectangular spherical triangle is a spherical triangle all of whose angles are right angles . The unit ...
Σελίδα 372
... spherical triangle , the original triangle , and the triangle whose vertices are the opposite ends of these diame- ters , are symmetrical spherical triangles . 745. A spherical polygon is a portion of the surface of a sphere bounded by ...
... spherical triangle , the original triangle , and the triangle whose vertices are the opposite ends of these diame- ters , are symmetrical spherical triangles . 745. A spherical polygon is a portion of the surface of a sphere bounded by ...
Σελίδα 373
Edward Rutledge Robbins. 750. THEOREM . Two symmetrical isos- celes spherical triangles can be superposed and are equal . Proof : The method of superposition , as in the case of plane triangles . AA B ' THEOREMS AND DEMONSTRATIONS 751 ...
Edward Rutledge Robbins. 750. THEOREM . Two symmetrical isos- celes spherical triangles can be superposed and are equal . Proof : The method of superposition , as in the case of plane triangles . AA B ' THEOREMS AND DEMONSTRATIONS 751 ...
Σελίδα 374
... triangle is the polar of a second triangle , then the second is the polar of the first . Given : Spherical △ ABC and its polar A A'B'C ' . A To Prove : A ABC is the polar triangle of A A ... spherical triangles each angle 374 SOLID GEOMETRY.
... triangle is the polar of a second triangle , then the second is the polar of the first . Given : Spherical △ ABC and its polar A A'B'C ' . A To Prove : A ABC is the polar triangle of A A ... spherical triangles each angle 374 SOLID GEOMETRY.
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Plane and Solid Geometry (Classic Reprint) Edward Rutledge Robbins Δεν υπάρχει διαθέσιμη προεπισκόπηση - 2015 |
Συχνά εμφανιζόμενοι όροι και φράσεις
ABCD acute angle altitude angle adjoining angles are equal apothem base bisector bisects chord circular cone circumference circumscribed circumscribed circle construct a square cylinder diagonals diameter dihedral angles equilateral triangle equivalent exterior angle face angles figure Find the area frustum given line given point given triangle Hence homologous homologous sides hypotenuse inscribed regular intersecting isosceles triangle lateral area lateral edges line joining mean proportional measured by arc median meet midpoint mutually equiangular number of sides opposite parallel parallelepiped parallelogram Pass plane perimeter perpendicular plane MN polyhedron prism Proof Prove quadrilateral ratio rectangle regular hexagon regular polygon regular pyramid rhombus right angles right circular right triangle secant segments similar slant height sphere spherical polygon spherical triangle straight line surface tangent tetrahedron THEOREM total area trapezoid trihedral vertex vertices
Δημοφιλή αποσπάσματα
Σελίδα 139 - If the product of two quantities is equal to the product of two others, one pair may be made the extremes, and the other pair the means, of a proportion.
Σελίδα 228 - An equiangular polygon inscribed in a circle is regular (if the number of its sides is odd) . 3.
Σελίδα 41 - If two triangles have two angles of the one equal to two angles of the other, each to each, and one side equal to one side, viz.
Σελίδα 47 - The line joining the mid-points of two sides of a triangle is parallel to the third side, and equal to half the third side.
Σελίδα 241 - The area of a regular inscribed hexagon is a mean proportional between the areas of the inscribed and circumscribed equilateral triangles. Ex.
Σελίδα 146 - If a line divides two sides of a triangle proportionally, it is parallel to the third side.
Σελίδα 12 - The straight lines are called the sides of the triangle, and their points of intersection are the vertices of the triangle.
Σελίδα 143 - A line parallel to one side of a triangle divides the other two sides proportionally.
Σελίδα 268 - If from the foot of a perpendicular to a plane a line be drawn at right angles to any line of the plane, and...
Σελίδα 340 - The lateral area of a circular cylinder is equal to the product of the perimeter of a right section of the cylinder by an element. Let S denote the lateral area, P the perimeter of a right section, and E an element of the cylinder AC.