| Humanities - 1885 - 480 pages
...isosceles, and lastly in the scalene; those that came after them proved the general theorem as follows: — **"The three angles of every triangle are equal to two right angles."** So also in the sections of a cone ; for they viewed the so-called " section of the rightangled cone... | |
| George William Usill - Surveying - 1889 - 306 pages
...the two interior angles H i A and HA i ; and because the angles A v H and iv E are equal, and that **the three angles of every triangle are equal to two right angles,** therefore the two angles VIE and s EH are together equal to the two angles AH v and HA i, and therefore... | |
| George Johnston Allman - Geometry - 1889 - 266 pages
...and lastly in the scalene ; those that came after them proved the general theorem as follows : — " **The three angles of every triangle are equal to two right angles."** So also in the sections of a cone ; for they viewed the so called " section of the rightangled cone... | |
| Edward Albert Bowser - Geometry - 1890 - 420 pages
...a quadrilateral have two of its opposite sides parallel, and the other two equal but not parallel, **any two of its opposite angles are together equal to two right angles.** 24. On the sides AB, BC, and CD of a parallelogram. ABCD three equilateral triangles are described,... | |
| Rupert Deakin - Euclid's Elements - 1891 - 102 pages
...quadrilateral figure has two of its opposite sides parallel, and the other two sides equal but not parallel, **any two of its opposite angles are together equal to two right angles.** 6. The parts of all perpendiculars to two parallel lines intercepted between them are equal. PART V.... | |
| Henry Martyn Taylor - 1893 - 486 pages
...a quadrilateral have two of its opposite sides parallel, and the two others equal but not parallel, **any two of its opposite angles are together equal to two right angles.** 3. If a straight line which joins the extremities of two equal straight lines, not parallel, make the... | |
| Henry Martyn Taylor - Euclid's Elements - 1895 - 708 pages
...a quadrilateral have two of its opposite sides parallel, and the two others equal but not parallel, **any two of its opposite angles are together equal to two right angles.** 3. If a straight line which joins the extremities of two equal straight lines, not parallel, make the... | |
| Bernard Bosanquet - Logic - 1895 - 188 pages
...Predicate. " William Pitt was a great statesman "=" There ' was a great statesman named William Pitt " ; " **The three angles of every triangle are equal to two right angles** " = " There are figures known as triangles with their three angles equal to two right angles " ; "... | |
| Bernard Bosanquet - Logic - 1897 - 188 pages
...Predicate. " William Pitt was a great statesman " = " There was a great statesman named William Pitt" ; " **The three angles of every triangle are equal to two right angles** " = " There are figures known as triangles with their three angles equal to two right angles"; "All... | |
| Education - 1895 - 696 pages
...Birmingham can't understand! Get to the heart of it. Don't grant him anything. Don't be quite sure that **the three angles of every triangle are equal to two right angles;** and don't at all allow, until you are yourself fairly convinced, that parallel straight lines produced... | |
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