IF two parallel planes be cut by another plane, their common sections with it are parallels.* Let the parallel planes AB, CD be cut by the plane EFHG, and let their common sections with it be EF, GH ; EF is parallel to GH. A course of geometrical drawing - Page 73by William Schofield Binns - 1861Full view - About this book
| John Playfair - Euclid's Elements - 1806 - 320 pages
...through DE, EF, and has been proved to be perpendicular to the plane through AB, BC. m. PROP. XIV. THEOR. **IF two parallel planes be cut by another plane, their common sections with it are parallel.** Let the parallel planes AB, CD be cut by the plane EFHG, and let their common sections with it be EF,... | |
| Robert Simson - Trigonometry - 1806 - 518 pages
...Wherefore, if two straight lines, &c. QED c 3. def. 11. d 9. 11. Book XI. PROP. XVI. THEOR. See N. **IF two parallel planes be cut by another plane, their common sections with it are** parallels. Let the parallel planes AB, CD be cut by the plane EFHG, and let their common sections with... | |
| Euclides - 1814 - 558 pages
...parallel to the plane through DE, EF. Wherefore if two straight lines, &c. QED Borne PROP. XVI. THEOR. lT **two parallel planes be cut by another plane, their common sections with it are** parallels. Let the parallel planes AB, CD be cut by the plane EFHG, and let their common sections with... | |
| Euclides - 1816 - 528 pages
...parallel to the plane through DE, EF. Where/one if two straight lines, &c. QED PROP. XVI. THEOR. See N. **If two parallel planes be cut by another plane, their common sections with it are** parallels. . Let the parallel planes AB, CD be cut by the plane EFHG, and let their common sections... | |
| John Mason Good - 1819 - 740 pages
...plane which passes through these is parallel to the plane pasting through the other*. Prop. XVI. Theor. **If two parallel planes be cut by another plane, their common sections with it are** parallels. Prop. XVII. Theor. If two straight lines be cut by parallel planes, they shall be cut in... | |
| Euclid, John Playfair - Circle-squaring - 1819 - 348 pages
...be perpendicular to one of them, it must be perpendicular to the other also. PROP. XIV. THEOR. B G **If two parallel planes be cut by another plane, their common sections with it are** parallels. Let the parallel planes AB, CD be cut by the plane EFHG, and let their common sections with... | |
| John Playfair - 1819 - 317 pages
...perpendicular to one of them, it must be perpendicular to the other also. PROP. XIV. THEOR. ff t-eo **parallel planes be cut by another plane, their common sections with it are** parallels. Let the parallel planes AB, CD be cut by the plane EFHG, and lei their common sections with... | |
| Euclid - 1835 - 540 pages
...to the plane through DE, EF. Wherefore, " if two straight lines," &c. QED See N. PROP. XVI. THEOH. **If two parallel planes be cut by another plane, their common sections with it are** parallels. Let the parallel planes AB, CD be cut by the plane EFHG, and let their common sections with... | |
| Mathematics - 1836 - 472 pages
...plane which passes through the first two is parallel to the plane riassing through the others. XIV. **If two parallel planes be cut by another plane, their common sections with it are** parallels. XV. If two parallel planes be cut by a third plane, they have the same inclination to that... | |
| John Playfair - Geometry - 1837 - 332 pages
...perpendicular to one of them, it must be perpendicular to the other also. 189 ^x B c PROP. XIV. THEOR. **If two parallel planes be cut by another plane, their common sections with it are** parallels. Let the parallel planes AB, CD, be cut by the plane EFHG, and let their common sections... | |
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