 | British Association for the Advancement of Science - Science - 1858 - 670 pages
...thereby with facility and despatch arriving at some novel and elegant conclusions. A Demonstration that the Three Angles of every Triangle are equal to Two Right Angles. By BA MURRAY. On the Surface of Centres of an Ellipsoid. By the Rev. G. SALMON, DD, MRLA. LIGHT,... | |
 | John Fry Heather - Angles (Geometry) - 1859 - 198 pages
...equal to the two angles HI A and '•A HAI; and because the vertical angles AVH and IVE 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 HAI,... | |
 | William Thomas Read - 1862 - 144 pages
...already proved may be obtained, which shows them to be true for any triangle. • We know (by Eu. 1, 32), that the three angles of every triangle are equal to two right angles ; therefore those of ABC are equal to two right angles ; and since B = 90°, therefore A + C... | |
 | John Fry Heather - Mathematical instruments - 1866 - 228 pages
...to the two angles HI A and '•* HA i ; and because the vertical angles AVH and IVE 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,... | |
 | John Fry Heather - Drawing instruments - 1871 - 248 pages
...to the two interior angles ni A and HAI; and because the vertical angles AVH and iv E are equal, and that the three angles of every triangle are equal to two right angles, therefore the two angles TIE and s EH are, together, equal to the two angles AH v and HAI,... | |
 | Arthur Young - Meditation - 1873 - 222 pages
...say it is compelled to affirm, and does affirm this, with the same confidence as the propositition that the three angles of every triangle are equal to two right angles, or that two bodies cannot occupy the same space. Even this, notwithstanding it lies at the... | |
 | Royal Philosophical Society of Glasgow - Science - 1879 - 636 pages
...capable of acting independently of each other, and in co-operation with each other. When I demonstrate that the three angles of every triangle are equal to two right angles, or that in a righi^angled triangle the square upon the side subtending the right angle is equal... | |
 | John Fry Heather - Scientific apparatus and instruments - 1884 - 566 pages
...to the two interior angles HIA and HAT; and because the vertical angles ATH 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 angle? AK v and HA i,... | |
 | George William Usill - Surveying - 1889 - 306 pages
...equal to 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... | |
 | Sir Edwin Arnold - Asia - 1896 - 452 pages
...Birmingham can't understand ! Go 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... | |
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When you have proved that the three angles of every triangle are equal to two right angles... 
