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Elements of Geometry and Trigonometry: From the Works of A. M. Legendre
Adrien Marie Legendre,Charles Davies
Keine Leseprobe verfügbar - 2016
ABCD altitude base called centre chord circle circumference column common comp consequently contained corresponding cosine Cotang described determine diameter difference distance divided draw drawn edges equal equations equivalent example expressed extremes faces fall feet figure follows formed formula four frustum given gives greater half hence horizontal hypothenuse included inscribed intersect length less logarithm manner means measured meet middle multiplied opposite parallel parallelogram pass perpendicular plane polygon positive prism PROBLEM proportional PROPOSITION pyramid quadrant radius ratio rectangle regular remaining right angles right-angled triangle Scholium segment sides similar sine solidity sphere spherical triangle square straight line substitute subtracting suppose surface taken tang tangent THEOREM third triangle triangle ABC trigonometrical unit vertex vertices
Seite 24 - If two triangles have two sides and the included angle of the one, equal to two sides and the included angle of the other, each to each, the two triangles will be equal.
Seite 38 - That, if a straight line falling on two straight lines make the interior angles on the same side less than two right angles, the two straight lines, if produced indefinitely, meet on that side on which are the angles less than the two right angles.
Seite 227 - A spherical triangle is a portion of the surface of a sphere, bounded by three arcs of great circles.
Seite 271 - The circumference of every circle is supposed to be divided into 360 equal parts, called degrees...
Seite 43 - Hence, the interior angles plus four right angles, is equal to twice as many right angles as the polygon has sides, and consequently, equal to the sum of the interior angles plus the sum of the exterior angles.
Seite 215 - The surface of a sphere is equal to the product of its diameter by the circumference of a great circle.
Seite 107 - If two triangles have two angles of the one equal to two angles of the other, each to each, and also one side of the one equal to the corresponding side of the other, the triangles are congruent.
Seite 93 - The area of a parallelogram is equal to the product of its base and altitude.
Seite 231 - The angles of spherical triangles may be compared together, by means of the arcs of great circles described from their vertices as poles and included between their sides : hence it is easy to make an angle of this kind equal to a given angle.