| Isaac Todhunter - 1880 - 400 páginas
...and the side AD produced at E\ shew that the rectangle EF, FG is equal to the square on BF. 404. If a **straight line drawn from the vertex of an isosceles triangle to the base,** be produced to meet the circumference of a circle described about the triangle, the rectangle contained... | |
| Charles Scott Venable - 1881
...the angle BAD is equal to DAC, and BDA to ADC, hence, the latter two are right angles ; therefore, a **straight line drawn from the vertex of an isosceles triangle to the** middle of its base, is perpendicular to that base, and divides the angle at the vertex into two equal... | |
| Marianne Nops - 1882
...square on their difference, is equal to twice the squares on the two straight lines. 10. The square of **any straight line drawn from the vertex of an isosceles triangle to the base is less than the square** of a side of the triangle by the rectangle contained by the segments of the base. LECTURE XXI. (PROPOSITIONS... | |
| EUCLID. - 1883 - 96 páginas
...the centre, and join C and D to E, any point in the circumference ; then EC2 + ED2 = AC2 + AD2. 10. **The square on any straight line drawn from the vertex...isosceles triangle to the base is less than the square on** one of the equal sides by the rectangle contained by the segments of the base. 11. Find the locus of... | |
| Euclid, Isaac Todhunter - 1883 - 400 páginas
...and the side AD produced at E: shew that the rectangle EF, FG is equal to the square on BF. 404. If a **straight line drawn from the vertex of an isosceles triangle to the base,** be produced to meet the circumference of a circle described about the triangle, the rectangle contained... | |
| Edward Albert Bowser - 1890 - 393 páginas
...49. The square on the straight line, drawn from the vertex of an isosceles triangle to any point in **the base, is less than the square on a side of the triangle by the rectangle** of the segments of the base. 50. The sides AB, CD of a quadrilateral ABCD inscribed in a circle are... | |
| Seth Thayer Stewart - 1891 - 406 páginas
...following : I. i. Any side of a triangle is greater than the difference between the two other sides. 2. A **straight line drawn from the vertex of an isosceles triangle to the base** produced, is longer than either of the equal sides. 3. If the angles at the base of any triangle are... | |
| Rupert Deakin - 1891 - 79 páginas
...Propositions are usually stated. For example, almost all editions of Euclid contain this Eider : — " The **straight line drawn from the vertex of an isosceles triangle to the** middle point of the base is perpendicular to the base." Boys who have learnt Euclid for years will... | |
| Euclid, Robert Simson - 1892 - 518 páginas
...than the square on one of the equal sides by the rectangle contained by the segments of the base. 10. **The square on any straight line drawn from the vertex of an isosceles triangle to the base** produced, is greater than the square on one of the equal sides by the rectangle contained by the segments... | |
| Seth Thayer Stewart - 1893 - 225 páginas
...i. Any side of a triangle is greater than the difference between the two other sides. (P. xi.) 2. A **straight line drawn from the vertex of an isosceles triangle to the base** produced, is longer than either of the equal sides. I. Draw a line from the vertex to the middle of... | |
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