 | Euclides - 1853 - 146 páginas
...perpendicular CH has been drawn to the given straight line AB. Which was to be done. PROP. XIII. THEOREM. The angles which one straight line makes with another...angles, or are together equal to two right angles. Let the straight line AB make with CD, upon one side of it, the angles CBA, ABD; these are either two... | |
 | Euclides - 1853 - 176 páginas
...has been drawn to the given straight line a b. Which was to be done. PROPOSITION XIII. — THEOREM. The angles which one straight line makes with another...angles, or are together equal to two right angles. LET the straight line ab make with cd, upon one side of it, the angles cba, abd : these are either... | |
 | Euclid, John Playfair - 1853 - 336 páginas
...the given point C a perpendicular CH has been drawn to the given straight line AB. PROP. XIII. THEOR. The angles which one straight line makes with another...i't, are either two right angles, or are together eqval to two right angles. Let the straight line AB make with CD, upon one side of it the angles CBA,... | |
 | Euclides - 1853 - 334 páginas
...in this case the angles ABC, ABD are together equal to two right angles. Hence the angles ABC, ABD are either two right angles, or are together equal to two right angles. Which was to be proved. PEOP. XIV. THEOE. If at a point in a straight line, two other straight lines,... | |
 | Euclid - 1853 - 176 páginas
...PROPOSITION XIII. THEOREM. — Ifaftraight line (AB) standing upon another(GD) forms angles with it, they are either two right angles, or are together equal to two right angles. DEMONSTRATION. For if the line AB is E IA perpendicular to CD, the angles ABC and . / ABD are two right... | |
 | William Somerville Orr - 1854 - 534 páginas
...PROPOSITION XIII.— THEOREM. T!te angles which one straight line (AB) makes with another (DC) upon me side of it, are either two right angles, or are together equal to two right anglet. For the angle А В С is either equal to ABD, or it is not. * Def. 8. If AB С be = AB D,... | |
 | Euclides - 1855 - 270 páginas
...shall make а right angle with it. PROP. XIII. THEOREM. The angles which one straight line maíces with another upon one side of it, are either two right...angles, or are together equal to two right angles. Let the straight line AB make with СD, upon one side of it, the two angles С BA, A 3 D. The*e angles... | |
 | John Playfair - 1855 - 334 páginas
...C. is perpendicular to the given straight line AB. OF GEOMETRY. BOOK I. PROP. XIII. THE OR. 19 / // The angles which one straight line makes with another upon one side of it, art either two right angles, or are together equal to two right angles. Let the straight line AB make... | |
 | Robert Potts - 1855 - 1050 páginas
...angle, and trace the changes in the sign and magnitude of the secant through the four quadrants. Find the angles which one straight line makes with another upon one side of it when the number of degrees in the one is equal to the number of grades in the other. Shew a priori... | |
 | Cambridge univ, exam. papers - 1856 - 200 páginas
...equal to the sum of the other two, the triangle can always be divided into two isosceles triangles. 2. The angles which one straight line makes with another...angles, or are together equal to two right angles. 3. If a straight line fall upon two parallel straight lines, it makes the alternate angles equal to... | |
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The angles which one straight line makes with another upon one side of it, are either two right angles, or are together equal to two right angles. 
