Søk Bilder Maps Play YouTube Nyheter Gmail Disk Mer »
Logg på
Bøker Bok 6170 av 188After remarking that the mathematician positively knows that the sum of the three...
" After remarking that the mathematician positively knows that the sum of the three angles of a triangle is equal to two right angles... "
Elements of Geometry and Trigonometry - Side 65
av C. Davies - 1867
Uten tilgangsbegrensning - Om denne boken

Greek Geometry from Thales to Euclid

George Johnston Allman - 1889 - 237 sider
...drawn from the preceding notices. First inference. — Thales must have known the theorem that the sum of the three angles of a triangle is equal to two right angles. Pamphila, in (d), refers to the discovery of the property of a circle that all triangles described...
Uten tilgangsbegrensning - Om denne boken

Manual of Plane Geometry: On the Heuristic Plan, with Numerous Extra ...

George Irving Hopkins - 1891 - 179 sider
...side of a triangle is less than the sum of the other two, and greater than their difference. 98. The sum of the three angles of a triangle is equal to two right angles. Sug. Consult Theorems 58 and 87. 99. If one side of a triangle be extended, the exterior angle...
Uten tilgangsbegrensning - Om denne boken

Plane and Solid Geometry

Seth Thayer Stewart - 1891 - 406 sider
...triangle, formed by extending the sides in the same order, is equal to six right angles. PROP. XVII. The sum of the three angles of a triangle is equal to two right angles. PROP. XVIII. The sum of any two angles of a triangle is equal to the supplement of the third...
Uten tilgangsbegrensning - Om denne boken

Appletons' Cyclopædia of Technical Drawing: Embracing the Principles of ...

Appleton, firm, publishers, New York - 1892 - 745 sider
...equal to the three angles of the triangle, and their sum is equal to two right angles. Therefore, the sum of the three angles of a triangle is equal to two right angles. On one side of a triangle (Fig. 50) construct a triangle equal to the first, with opposite...
Uten tilgangsbegrensning - Om denne boken

Émile: Or, Treatise on Education

Jean-Jacques Rousseau - 1892 - 363 sider
...of mathematieal demonstration. No experimental process can ever establish the general truth that the sum of the three angles of a triangle is equal to two right angles. We should not confound " geometrical recreations " with geometrical science. — (P.) f Isoperimetric...
Uten tilgangsbegrensning - Om denne boken

Rousseau's Émile: Or, Treatise on Education

Jean-Jacques Rousseau - 1892 - 355 sider
...of mathematical demonstration. No experimental process can ever establish the general truth that the sum of the three angles of a triangle is equal to two right angle?. We should not confound " geometrical recreations " with geometrical science.—(P.) f Isoperimetric...
Uten tilgangsbegrensning - Om denne boken

THE ELEMENTS OF SOLID GEOMETRY

WILLIAM C. BATOL, A.M., - 1893
...lines cannot meet. 353. Any side of a triangle is less than the sum of the other two sides. 354. The sum of the three angles of a triangle is equal to two right angles. 355. Two triangles are equal in all respects when two sides and the included angle of the one...
Uten tilgangsbegrensning - Om denne boken

Teachers' Manual for Teachers Using Arithmetic by Grades

John Tilden Prince - 1894
...point is equal to 360°. 6. The opposite angles made by two lines crossing each other are equal. 7. The sum of the three angles of a triangle is equal to two right angles. The sum of the angles of a polygon is equal to two right angles taken as many times as the...
Uten tilgangsbegrensning - Om denne boken

Appletons' Popular Science Monthly, Volum 50

William Jay Youmans - 1897
...invention, and judgment" Instead of a series of written proofs to memorize, such as, for instance, the sum of the three angles of a triangle is equal to two right angles, the student takes the triangle, and, with suggestions from the teacher where necessary, works...
Uten tilgangsbegrensning - Om denne boken

The Popular Science Monthly, Volum 12

1878
...inferences. Locke explains it as follows: After remarking that the mathematician positively knows that the sum of the three angles of a triangle is equal to two right angles because he apprehends the geometrical proof, he thus continues : " But another man who never...
Uten tilgangsbegrensning - Om denne boken




  1. Mitt bibliotek
  2. Hjelp
  3. Avansert boksøk
  4. Last ned PDF