| W. Davis Haskoll - 1858 - 422 σελίδες
...two triangles of equal altitude, and on equal bases, are equal. Equal triangles upon the same base, and on the same side of it, are between the same parallels. If any two sides of any triangle are intersected by a line parallel to the third side, the intercepted... | |
| Euclid - 1859 - 136 σελίδες
...to the triangle CDE (V. 9); and they are on the same base DE. But equal triangles on the same base and on the same side of it are between the same parallels (I. 39). Therefore DE is parallel to BC. Wherefore, if a straight line, &c. QED PROPOSITION III—... | |
| Royal college of surgeons of England - 1860 - 336 σελίδες
...lines shall be parallel to one another. 5. Equal triangles on equal hases, in the same straight line and on the same side of it, are between the same parallels. 6. If a straight line be divided into any two parts, the squares of the whole line and one of the parts... | |
| Euclides - 1861 - 464 σελίδες
...us from any . in a side of а Д to divide it into two eq. parts. 39. 120. Eq. Д8 on the same base and on the same side of it are between the same parallels. The loci of the vertices of eq. Дз on the same base, form a st.linc 40. 121. Eq. дз on eq. bases... | |
| Euclides - 1862 - 172 σελίδες
...same are equal to one another,' (ax 7.) PROP. XXXIX.— THEOREM. Equal triangles upon the same base and on the same side of it, are between the same parallels. (References — Prop. i. 31,37; ax. !._) Let the equal triangles ABC, DEC, be upon the same base BC,... | |
| University of Oxford - 1863 - 328 σελίδες
...greater than the base of the other. 8. Equal triangles, on equal bases, in the same straight line, and on the same side of it, are between the same parallels. 9. Describe a parallelogram that shall be equal to a given triangle, and have one of its angles equal... | |
| Euclides - 1864 - 448 σελίδες
...to the triangle CDE: (v. 9.) and they are on the same base DE: but equal triangles on the same base and on the same side of it, are between the same parallels ; (I. 39.) therefore DE is parallel to BC. Wherefore, if a straight line, &c. QED PROPOSITION III.... | |
| Euclides - 1865 - 402 σελίδες
...the triangle. CDE ; (v. 9.) and they are on the same base DE ; but equal triangles on the same base and on the same side of it, are between the same parallels ; (i. 39.) therefore DE is parallel to BC. Wherefore, if a straight Kne, &c. QED PROP. m.— THEOREM.... | |
| Robert Potts - 1865 - 528 σελίδες
...that OC i» equal to OA and OP to OB'. LOCI. HINTS, &c. 8. Let ABC, DBC, EBC, be three equal triangles on the same base BC and on the same side of it. Join AD, DE. Then AD is parallel to BC, and DE is parallel to BC. 6. From the given point A, let fall... | |
| Euclid, Isaac Todhunter - 1867 - 426 σελίδες
...base, and on the same side of it, are between the same parallels. Let the equal triangles ABC, DBC be on the same base BC, and on the same side of it : they shall be between the same parallels. Join AD. A p AD shall be parallel to BC. For if it is not,... | |
| |