| John Playfair - Euclid's Elements - 1846 - 317 pages
...three, and be described about the square ABCD. PROP. X. PROB. To describe an isosceles triangle, having **each of the angles at the base double of the third angle.** Take any straight line AB, and divide (11. 2.) it in the point C, so that the rectangle AB.BC may be... | |
| Euclides - 1848
...describe a circle about a given square. PROP. X. PROBLEM. To describe an isosceles triangle, having **each of the angles at the base double of the third angle.** PROP. XI. PROBLEM. To inscribe an equilateral and equiangular pentagon in a given circle. PROP. XII.... | |
| J. Goodall, W. Hammond - 1848
...are questions relating to it most easily worked ? Section 3. 1. Describe an isosceles triangle having **each of the angles at the base double of the third angle.** 2. Bisect a given triangle by a straight line drawn through a given point in one of the sides. 3. Prove... | |
| John Fry Heather - 1849
...making and recording observations, 161 ; use of the jmrlnMe transit, 162. Triangle, isosceles, having **each of the angles at the base double of the third angle,** constructed, 43 ; right-angled, solved, 32. Troughton, his level, 110; hit reflecting circle, 149.... | |
| 1850
...less than a semicircle is greater than a right angle. 6. To describe an isosceles triangle, having **each of the angles at the base double of the third angle.** DEDUCTIONS. (I.) Bisect a given triangle by a line drawn from a given point in one of its sides. (2.)... | |
| Harvey Goodwin - Mathematics - 1851 - 173 pages
...in one of them shall be five times the angle in the other. 5. Describe an isosceles triangle, having **each of the angles at the base double of the third angle.** Shew that the base of the triangle is equal to the side of a regular pentagon inscribed in the smaller... | |
| FRANCIS J. JAMESON - 1851
...and therefore AjAgAg will be the triangle required. 1850. (A). Describe an isosceles triangle, having **each of the angles at the base double of the third angle,** (iv. 10.) (B}. Shew that the base of the triangle is equal to the side of a regular pentagon inscribed... | |
| Bengal council of educ - 1852
...parallelogram meet the diagonal of the whole parallelogram in the same point. 2. Describe a triangle having **each of the angles at the base double of the third angle : and** deduce the expression for sin 36°. 3. If two straight lines be at right angles to the same plane they... | |
| Royal Military Academy, Woolwich - Mathematics - 1853
...angles BDA, DBA is double of the angle DAB. Wherefore an isosceles triangle ABD is described, having **each of the angles at the base double of the third angle.** Which was to be done. PROPOSITION XI. PROB. To inscribe an equilateral and equiangular pentagon in... | |
| Euclides - 1853
...be described about the square ABCD. QEp . PROP. X. PROBLEM. To describe an isosceles Mangle, having **each of the angles at the base double of the third angle.** Take any straight line AB, and (II. 11.) divide it in the point C, so that the rectangle AB, BC, may... | |
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