 If, at a point in a straight line, two other straight lines, upon the opposite sides of it, make the adjacent angles together equal to two right angles, these two straight lines shall be in one and the same straight line.  Euclid - Page 31by Euclid, Rupert Deakin - 1903 - 164 pagesFull view - About this book
 | Euclid - Euclid's Elements - 1904 - 488 pages
...angles to one another. 3. Shew that the angles AOX and COY are complementary. PROPOSITION 14. THEOREM. If, at a point in a straight line, two other straight...adjacent angles together equal to two right angles, then these two straight lines shall be in one and the same straight line. /A At the point B in the... | |
 | 1906 - 818 pages
...Inspector. Mr. J. CHAMBERS, District Inspector. SECTION A. 1. If at a point in a right line two other right lines on opposite sides of it make the adjacent angles together equal to two right angles, these two right lines form one continuous line. 2. If two triangles have two sides of one respectively equal... | |
 | Walter Percy Workman - Geometry - 1908 - 228 pages
...another straight line on one side of it are together equal to two right angles (Euc. I. 13) 83 A.1c. — If at a point in a straight line, two other straight...right angles, these two straight lines shall be in the same straight line (Euc. I. 14) 84 A. 2. — Each of the angles formed by two intersecting straight... | |
 | Henry Sinclair Hall - 1908 - 286 pages
...the same angle are equal. (ii) Complements of the same angle are equal. 11 THEOREM 2. [Euc. I. 14.] If, at a point in a straight line, two other straight...adjacent angles together equal to two right angles, then these two straight lines are in one and the same straight line. 12 THEOREM 3. [Euc. I. 15.] If... | |
 | Godfrey Bosvile - Horsemanship - 1908 - 316 pages
...adopt them ; but in no case may algebraical symbols, such as the minus sign, and AJP, be used.] 1. If, at a point in a straight line, two other straight...adjacent angles together equal to two right angles, then these two straight lines shall be in one and the same straight line. ABCD is a rhombus ; O,E,F... | |
 | Newfoundland Council of Higher Education - 1912 - 296 pages
...line perpendicular to a given straight line of unlimited length from a given point without it. A 4. If, at a point in a straight line, two other straight...adjacent angles together equal to two right angles, then these two straight lines shall be in one and the same straight line. (10) A 5. Prove that any... | |
 | Newfoundland Council of Higher Education - 1913 - 228 pages
...perpendicular bisectors of AD and BC intersect at O. Prove that AB and CD subtend equal angles at O. (6) 5. If, at a point in a straight line, two other straight lines on the opposite sides of it make the adjacent angles together equal to two right angles, prove that the... | |
 | Education - 1914 - 914 pages
...soldiers are angry (xoXorotVai) at the generals. GEOMETRY.— X. 9 to 11 am, Wednesday, 24 June, 1914. 1. If at a point in a straight line, two other straight lines, on opposite side* of it, make the adjacent angles together, equal to two right angles, then these two straight... | |
 | Witold Marciszewski - LANGUAGE ARTS & DISCIPLINES - 1994 - 340 pages
...formulation of general theorems in the example of Euclid's Theorem 14 of Book I. It runs as follows: If, at a point in a straight line, two other straight lines, on the opposite sides of it, make the adjacent angles together equal to two right angles, these two straight... | |
 | Law - 1903 - 960 pages
...non-adjacent angles. 1. Prove that, it at a point in a right liiic, two other right lines on opposite sides make the adjacent angles together equal to two right angles, these two right lines form one continuous rignt line. 3. If a parallelogram and a triangle be on the same base... | |
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