 | Euclid, John Playfair - 1846 - 334 sider
...angles DBA, ABC. PROP. XIV. THEOR. //, 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 are in one and the same straight line. At the point B in the straight line... | |
 | Great Britain. Committee on Education - 1846 - 434 sider
...5 x - 12 "" IS 8. " Prove that if at a point in a given 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 are in one and the same straight line." 9. The wages of a servant were 40/.... | |
 | Great Britain. Council on Education - 1846 - 474 sider
...5 x - 12 18 8. " Prove that if at a point in a given straight line two other strain-lit lines upon the opposite sides of it make the adjacent angles together equal to two right angles, these two straight lines are in one and the same straight line." 9. The wages of a servant were 40Z.... | |
 | Great Britain. Admiralty - 1846 - 128 sider
...rt. /.s, .-. /. DBA + L ABC = 2 rt. L s. Ax K Therefore the angles, &c. PROP. XIII. THEOR. 14. 1 Eu. 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... | |
 | Euclides - 1846 - 292 sider
...to two right angles. Wherefore, The angles, which one straight line %c. <t. i:.j>. PROP. XIV. THEOR. 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... | |
 | Great Britain. Admiralty - 1846 - 128 sider
.../_», .'. Z DBA + L ABC = 2 rt. L s. Ax ' '• Therefore the angles, &c. PROP. XIII. THEOR. 14. 1 Eu. 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... | |
 | Great Britain. Committee on Education - 1847 - 624 sider
...sphere of the same diameter? GEOMETRY AND ALGEBRA. Section I. Prove that, 1. If at a point in a given straight line two other straight lines on the opposite...adjacent angles together equal to two right angles, these two straight lines shall be in one and the same straight line. 2. Any two sides of a triangle... | |
 | Great Britain. Committee on Education - 1847 - 606 sider
...also which subtend or are opposite to the equal angles shall be equal. 2. If at a point in a given straight line two other straight lines on the opposite...adjacent angles together equal to two right angles, these two straight lines shall be in one and the same straight line. 3. Equal triangles on the same... | |
 | Euclides - 1847 - 128 sider
....'.remaining / DBC = remaining L ECB : ie L* below the base are =.— QED PROP. XIV. THEOR. GEN. ENUN. — 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... | |
 | Euclides - 1848 - 52 sider
...of it, are either two right angles, or are together equal to two right angles. PROP. XIV. THEOREM. 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... | |
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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. 
