Elements of Geometry and Plane Trigonometry: With an Appendix, and Copious Notes and IllustrationsA. Constable & Company, 1817 - 432 Seiten |
Im Buch
Ergebnisse 1-5 von 100
Seite 5
... right angles , being derived from the same measure , must be equal to each other . If a straight line CB stand at equal angles CBA and CBD on another straight line AD , and if the surface ACD be con- ceived laid over towards the ...
... right angles , being derived from the same measure , must be equal to each other . If a straight line CB stand at equal angles CBA and CBD on another straight line AD , and if the surface ACD be con- ceived laid over towards the ...
Seite 6
... angles is a right angle . The angle contained by the opposite portions DA and DB of a straight line is hence equal to two right angles ; and , for the same rea- son , all the angles ADC , CDE , EDF and FDB , formed at the point D and on ...
... angles is a right angle . The angle contained by the opposite portions DA and DB of a straight line is hence equal to two right angles ; and , for the same rea- son , all the angles ADC , CDE , EDF and FDB , formed at the point D and on ...
Seite 7
... angle is formed by the production of both its sides . 10. The inverted divergence of the two sides of an an- gle , or the defect of the angle from four right angles , is named the reverse angle . The angle DBE is vertical to ABC , ABD ...
... angle is formed by the production of both its sides . 10. The inverted divergence of the two sides of an an- gle , or the defect of the angle from four right angles , is named the reverse angle . The angle DBE is vertical to ABC , ABD ...
Seite 8
... angles . The third angle may therefore , by its charac- ter , serve to discriminate a triangle . 18. A right - angled triangle is that which has a right angle . 19. An obtuse angled triangle is that which has an obtuse angle . 20. An acute ...
... angles . The third angle may therefore , by its charac- ter , serve to discriminate a triangle . 18. A right - angled triangle is that which has a right angle . 19. An obtuse angled triangle is that which has an obtuse angle . 20. An acute ...
Seite 9
... angle of a rectilineal figure be less than two right angles , it protrudes , and is called salient ; if it be greater than two right angles , it makes a sinuosity , and is termed re - entrant . Thus the angle ABC is re - entrant , and ...
... angle of a rectilineal figure be less than two right angles , it protrudes , and is called salient ; if it be greater than two right angles , it makes a sinuosity , and is termed re - entrant . Thus the angle ABC is re - entrant , and ...
Inhalt
219 | |
225 | |
226 | |
231 | |
234 | |
237 | |
251 | |
256 | |
101 | |
110 | |
128 | |
142 | |
155 | |
181 | |
199 | |
200 | |
204 | |
257 | |
260 | |
262 | |
264 | |
283 | |
318 | |
338 | |
360 | |
365 | |
Andere Ausgaben - Alle anzeigen
Elements of Geometry, and Plane Trigonometry: With an Appendix, and Very ... University Professor Emeritus John Leslie, Sir Keine Leseprobe verfügbar - 2016 |
Häufige Begriffe und Wortgruppen
ABCD adjacent angle altitude angle ABC angle ADB angle BAC base AC bisect centre chord circle circumference consequently construction contained angle cosine decagon denote describe diameter difference distance diverging lines divided draw equal to BC equilateral triangle equivalent to twice evidently exterior angle given greater half Hence hypotenuse inscribed isosceles triangle join let fall likewise measure parallel perpendicular point G polygon PROB PROP Proposition quadrilateral figure quantities radius ratio rectangle rectangle contained rectilineal figure rhomboid right angles right-angled triangle Scholium segments semicircle semiperimeter sequently side AC sinB sine square of AB square of AC straight line tangent THEOR tion triangle ABC twice the rectangle twice the square vertex vertical angle whence Wherefore