Chauvenet's Treatise on Elementary Geometry

Εξώφυλλο
J. B. Lippincott Company, 1887 - 322 σελίδες
 

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Δημοφιλή αποσπάσματα

Σελίδα 139 - Two triangles having 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.
Σελίδα 135 - The area of a rectangle is equal to the product of its base and altitude.
Σελίδα 119 - The square of the length of the hypotenuse of a right triangle is equal to the sum of the squares of the lengths of the other two sides.
Σελίδα 29 - The perpendicular is the shortest line that can be drawn from a point to a straight line.
Σελίδα 251 - A truncated triangular prism is equivalent to the sum of three pyramids whose common base is the base of the prism, and whose vertices are the three vertices of the inclined section. Let ABC-DEF be a truncated triangular prism whose base is ABC and inclined section DEF.
Σελίδα 280 - Each side of a spherical triangle is less than the sum of the other two sides.
Σελίδα 52 - The straight line joining the middle points of two sides of a triangle is parallel to the third side, and equal to half of it.
Σελίδα 270 - Any line or plane tangent to a sphere is perpendicular to the radius drawn to the point of contact.
Σελίδα 202 - If a straight line is perpendicular to each of two straight lines at their point of intersection, it is perpendicular to the plane of those lines.
Σελίδα 81 - An angle formed by a tangent and a chord is measured by one-half the intercepted arc.

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