 | 1844 - 456 σελίδες
...them. 1842. GEOMETRY. 1. The angles at the base of an isosceles triangle are equal to one another ; and if the equal sides be produced, the angles on the other side of the base are equal. 2. Give different methods of drawing a straight line at right angles to another ; and explain... | |
 | Euclides - 1845 - 546 σελίδες
...demonstrated. PROPOSITION V. THEOREM. The angles at the base of an isosceles triangle are equal to each other; and if the equal sides be produced, the angles on...equal. Let ABC be an isosceles triangle of which the sideAB is equal to AC, and let the equal sides AB, AC be produced to D and E. Then the angle ABC shall... | |
 | Euclid - 1845 - 218 σελίδες
...an isoscelet triangle are equal to one another ; and if the equal sides be produced, the angles upon the other side of the base shall be equal. Let ABC...triangle, of which the side AB is equal to AC, and let the straight lines AB, AC be produced to D and E, the angle ABC shall be equal to the angle ACB, and the... | |
 | Euclid, James Thomson - 1845 - 382 σελίδες
...another ; and, if the equal sides he produced, the angles upon the other side of the base are also equal.* Let ABC be an isosceles triangle, of which the side AB is equal to AC, and let the sides AB, AC be produced to D and E ; the angle ABC is equal to the angle ACB, and the angle CBD to... | |
 | Euclides - 1846 - 292 σελίδες
...an isosceles triangle an equal to one another ; and, if the equal sides be produced, the angles upon the other side of the base shall be equal. Let ABC...triangle, of which the side AB is equal to AC, and let the straight lines AB, AC' be produced to D and E : the angle ABC shall be equal to the angle ACB, and... | |
 | Euclid, John Playfair - 1846 - 334 σελίδες
...an Isosceles triangle are equal to one another ; and if the equal sides be produced, the angles upon the other side of the base shall be equal. Let ABC...triangle, of which the side AB is equal to AC, and let the straight lines AB, AC be produced to D and E, the angle ABC shall be equal to the angle ACB, and the... | |
 | J. Goodall, W. Hammond - 1848 - 390 σελίδες
...from a given point in it. 3. The angles at the base of an isosceles triangle are equal to each other, and if the equal sides be produced the angles on the other side of the base shall be equal. SECTION II. 1. Prove that the sum of the three angles of a triangle equals two right angles. Given... | |
 | 1848 - 542 σελίδες
...Geometry," &c. page 21. 3. The angles at the base of an isosceles triangle are equal to each other, and if the equal sides be produced, the angles on the other side of the base shall be equal. — See " Bell's Euclid," prop. v. book i. ; or " Tate's Geometry," &c. arts. 18 and 27SECTION 2. 1.... | |
 | Great Britain. Council on Education - 1848 - 532 σελίδες
...superficies, and a circle. 3. The angles at the base of an isosceles triangle are equal to each other, and if the equal sides be produced the angles on the other side of the base shall be equal. Section 2. 1. Prove that the sum of the three angles of a triangle equals two right angles. Given the... | |
 | Great Britain. Committee on Education - 1848 - 514 σελίδες
...point within it. 3. The angles at the base of an isosceles triangle are equal to each other, and if tho equal sides be produced the angles on the other side of the base shall be equal. Section 2. 1. Prove that the sum of the three angles of a triangle equals two right angles. Given the... | |
| |
THE angles at the base of an isosceles triangle are equal to one another : and, if the equal sides be produced, the angles upon the other side of the base shall be equal. 
