| Robert Simson - 1762 - 466 Seiten
...to the two interior and oppofite angles ; and the three interior angles of every triangle are ec(ual **to two right angles. Let ABC be a triangle, and let one of its** fides BC be produced to D. the exterior angle ACD is equal to the two interior and oppofite angles... | |
| 1867
...в together make up the angle r> с в, which is therefore equal to the angles с в А, в A c. 7. **The three interior angles of every triangle are together equal to two right** anglet. In Fig. 5 the angle BCD has been shown to be equal to the angles с в А, в А с ; to each... | |
| Robert Simson - 1775 - 520 Seiten
...equal to the two interior and oppofite angles ; and the three interior angles of every triangle are **equal to two right angles. Let ABC be a triangle, and let one of its** fides BC be produced to D ; the exterior angle ACD is equal to the two interior and oppofite angles... | |
| Robert Simson - 1781 - 466 Seiten
...equal to the two interior and oppofite angles ; and the three interior angles of every triangle are **equal to two right angles. Let ABC be a triangle, and let one of its** fides BC be produced to D. the exterior angle ACD is equal to the two interior and oppofite angles... | |
| Euclid - 1781 - 520 Seiten
...equal to the two interior and oppofite angles ; and the three interior angles of every triangle are **equal to two right angles. Let ABC be a triangle, and let one of its** fides BC be produced to D ; the exterior angle ACD is equal to the two interior and oppofite angles... | |
| William Enfield, Johann Jakob Brucker - 1791 - 628 Seiten
...four. Of the geometrical theorems afcribed to Pythagoras, the following are the principal; that the **interior angles of every triangle are together equal to two right angles;** that the only polygons which will fill up the whole fpace about a given point, are the equilateral... | |
| John Playfair - 1795 - 400 Seiten
...equal to the two interior and oppofite angles ; and the three interior angles of every triangle are **equal to two right angles. Let ABC be a triangle, and let one of its** fides BC be produced to D ; the exterior angle ACD is equal to the two in- . terior and oppofite angles... | |
| Alexander Ingram - 1799 - 351 Seiten
...equal to the two interior and oppoiite angles ; and the three interior angles of every triangle are **equal to two right angles. Let ABC be a triangle, and let one of its** fides BC be produced to D ; the exterior angle ACD is equal to the two interior and oppofite angles... | |
| Robert Simson - 1804
...equal to the two interior and oppofite angles ; and the three interior angles of every triangle are **equal to two right angles. Let ABC be a triangle, and let one of its** fides BC be produced to D. the exterior angle ACD is equal to the two interior and oppofite angles... | |
| John Playfair - 1806 - 311 Seiten
...straight line BC. Which was to be done. " PROP. XXXII. THEOR; IF a side of any triangle be produced, the **exterior /' angle is equal to the two interior and...and the three interior angles of every triangle are** equal to two right angles. Let ABC be a triangle, and let one of its sides BC be produced to D ; the... | |
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