Search Images Maps Play YouTube News Gmail Drive More »
Sign in
Books Books
" ... the three angles of a triangle are together equal to two right angles, although it is not known to all. "
The Works of John Playfair ...: With a Memoir of the Author ... - Page 335
by John Playfair - 1822
Full view - About this book

Proceedings of the Canadian Institute, Volumes 6-7

Canadian Institute - 1889 - 754 pages
...three pairs of coincident points. (3) To secure this the observer need only see that the condition that the three angles of a triangle are together equal to two right angles is satisfied by the scale indications. The " three point problem " may be solved by the scale with...
Full view - About this book

First and Fundamental Truths: Being a Treatise on Metaphysics

James McCosh - 1889 - 390 pages
...inhabited, though a truth, is not a primary truth ; we believe it on secondary testimony. Nay, that the three angles of a triangle are together equal to two right angles is not seen to be true at once ; it needs other truths coming between to prove it. But that there is...
Full view - About this book

Shakespeare's Sonnets

William Shakespeare - 1890 - 356 pages
...be said, indeed, that tlie evidence altogether is not of equal cogency with the demonstration that the three angles of a triangle are together equal to two right angles. This may be freely granted, and if such a demonstration is required, the Sonnet-problem is no doubt...
Full view - About this book

Proceedings of the Canadian Institute

Canadian Institute - 1890 - 336 pages
...three pairs of coincident points. (3) To secure this the observer need only see that the condition that the three angles of a triangle are together equal to two right angles is satisfied by the scale indications. The "three point problem " may be solved by the scale with great...
Full view - About this book

Bulletin of the Massachusetts Commission on Mental Diseases. v.1, 1917, Volume 1

1917 - 590 pages
...his statement of the pans a&inorum, and his demonstration, without drawing, of the proposition that the three angles of a triangle are together equal to two right angles. He shows no evidence of having hallucinations. Emotionally, he seems of an easy-going, optimistic temperament....
Full view - About this book

Supplement to Machine Gun Drill Regulations (provisional) 1917 and ...

United States American Expeditionary Forces - 1918 - 360 pages
...following simple- mathematical facts is of great assistance in modern machine gunnery. 1. Triangles. (a) The three angles of a triangle are together equal to two right angles. Thus, if any two angles are known, the remaining angle can be found. ABC + BCA + CAB = 2 right angles...
Full view - About this book

The New Teaching

John Adams - 1918 - 448 pages
...prove it ? Does the perpendicular from the centre of a circle to a chord bisect the chord ? Obviously. The three angles of a triangle are together equal to two right angles. Are they ? Yes. Well, now, that's a funny thing. Why ? " If the above soliloquy fairly represents the...
Full view - About this book

Implication and Linear Inference

Bernard Bosanquet - 1920 - 200 pages
...its several angles. Still, in a very great measure, the connection, as we said, lies naked before us. The three angles of a triangle are together equal to two right angles. If it is equilateral, it is equiangular, and vice versa. If a side is lengthened ceteris paribus, the...
Full view - About this book

The Tragic Sense of Life in Men and in Peoples

Miguel de Unamuno - 1921 - 380 pages
...is hoped for. Perhaps there is nobody who would sacrifice his life for the sake of maintaining that the three angles of a triangle are together equal to two right angles, for such a truth does not demand the sacrifice of our life; but, on the other hand, there are many...
Full view - About this book

The Development of Berkeley's Philosophy

George Alexander Johnston - 1923 - 414 pages
...so simple as this.. Suppose, for example, that in proving the theorem which says that the interior angles of a triangle are together equal to two right angles, the figure which we actually have on the paper in front of us is an isosceles right-angled triangle. What...
Full view - About this book




  1. My library
  2. Help
  3. Advanced Book Search
  4. Download EPUB
  5. Download PDF