| James Russell Soley - 1880 - 346 σελίδες
...invariable. Under what conditions will this difference be zero ''. 2. Equal triangles on the same base, and on the same side of it, are between the same parallels. The sides AB and AC of a triangle are bisected in D and K respectively, and SE, CD are produced until... | |
| Isaac Todhunter - 1880 - 426 σελίδες
...join AE, BD intersecting at P; shew that the angle APJB is constant. 520. If any number of triangles on the same base BC, and on the same side of it have their vertical angles equal, and perpendiculars, intersecting at D, be drawn from B and C on the... | |
| Euclides, Frederick Burn Harvey - 1880 - 178 σελίδες
...Wherefore, Triangles on equal bases, 'Ssc. QED PROP. XXXIX. THEOREM. Equal triangles on the same base, and on the same side of it are between the same parallels. Let ABC and DBC be equal triangles, on the same base BC and on the same (viz. the upper) side of it.... | |
| 1880 - 594 σελίδες
...(1) Euclid, i, page 214. Let ABC be an isosceles triangle, and let DBC be any other equal triangle on the same base BC, and on the same side of it. Join AD (draw figure so that D is to the right of A). From B draw BE perpendicular to AD produced ;... | |
| John Gibson - 1881 - 64 σελίδες
...Triangles on the same base and between the same parallels are equal. 4. Equal triangles on the same base and on the same side of it are between the same parallels. 5. Prove that the diagonals of a parallelogram bisect each other. 6. Bisect a given triangle by a straight... | |
| 1883 - 536 σελίδες
...rectilineal figure said to be inscribed in another rectilineal figure ? 9. Equal triangles on the same base, and on the same side of it are between the same parallels. 10. Describe a square that shall be equal to a given rectilineal figure. 12. One circle cannot touch... | |
| Marianne Nops - 1882 - 278 σελίδες
...same base and on the same side of it a re between the same parallels. Let the equal As ABC, DBC be on the same base BC and on the same side of it. They shall be between the same parallels. AD shall be || to CD. If not, through A draw AE || to BC,... | |
| College of preceptors - 1882 - 528 σελίδες
...proposition in the course of the proof of which reference is made to it. 3. Equal triangles on the same base, and on the same side of it, are between the same parallels. Prove that diameters (produced, if necessary) of any pair of parallelograms about the diameter of a... | |
| Great Britain. Education Department. Department of Science and Art - 1882 - 510 σελίδες
...two sides of the quadrilateral are parallel to each other. (10.) 10. Equal triangles on the same base and on the same side of it are between the same parallels. If a quadrilateral is divided into four equal triangles by its diagonals show that it is a parallelogram.... | |
| Euclid, Isaac Todhunter - 1883 - 428 σελίδες
...join AE, BD intersecting at P; shew that the angle APB is constant. 520. If any number of triangles on the same base BC, and on the same side of it have their vertical angles equal, and perpendiculars, intersecting at D, be drawn from B and C7on the... | |
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