 | Thomas Stantial - 1859 - 352 pagina’s
...four right angles. B. The three angles of every triangle are equal to two right angles. C. The angles at the base of an isosceles triangle are equal to one another. D. Construct a parallelogram equal to a given rectilineal figure, with an angle equal to a given angle.... | |
 | Euclides - 1860 - 288 pagina’s
...coincide, and therefore the angle GBC is equal to the angle HEF. PROPOSITION V. THEOREM. The angles at the base of an isosceles triangle are equal to...produced, the angles upon the other side of the base shall also be equal. Given, ABC an isosceles triangle, of which the side AB is equal to AC, and let the straight... | |
 | Royal college of surgeons of England - 1860 - 332 pagina’s
...angle, and a rhomboid. Explain the terms axiom, problem, hypothesis, reductio ad absurdum. 2. The angles at the base of an isosceles triangle are equal to...another ; and if the equal sides be produced, the angles on the other side of the base shall be equal. 3. If two straight lines cut one another, the angles... | |
 | Robert Potts - 1860 - 380 pagina’s
...other; and if the equal sides be produced, the angles on the other side of the base shall be equal. an isosceles triangle of which the side AB is equal to AC, and let the equal sides AB, AC be produced to D and E. Then the angle ABC shaft be equal to the angle ACB, and... | |
 | War office - 1861 - 714 pagina’s
...income tax on his income has 1632/. 18s. lOrf. remaining ; what had he at first ? Euclid. 1. The angles at the base of an isosceles triangle are equal to...angles upon the other side of the base shall be equal. 2. The straight lines which join the extremities of two equal and parallel straight lines towards the... | |
 | Euclides - 1862 - 140 pagina’s
...two triangles have, &c. (see Enunciation). Which was to be shown. PROPOSITION 5. -THEOREM. The angles at the base of an isosceles triangle are equal to...produced, the angles upon the other side of the base shall also be equal. (References — Prop. I. 3, 4; ax. 3.) Hypothesis. — 1. Let ABC be an isosceles triangle,... | |
 | Euclides - 1862 - 172 pagina’s
...triangles have two sides of the one equal to two sides of the other, &c. PROP. V.— THEOREM. The angles at the base of an isosceles triangle are equal to...equal sides be produced, the angles upon the other fide of the base shall be equal. (References — Prop. l. 3, 4 ; ax. 3.) Let ABC be an isosceles triangle,... | |
 | University of Oxford - 1863 - 316 pagina’s
...right angles. 3. Describe a square that shall be equal to a given rectilineal figure. 4. The angles at the base of an isosceles triangle are equal to...another; and if the equal sides be produced, the angles on the other side of the base shall be equal to one another. 5. Construct a triangle of which the sides... | |
 | Robert Potts - 1863 - 482 pagina’s
...a right line, a right angle, parallel lines, a rKombus, and an acute-angled triangle. 2. The angles at the base of an isosceles triangle are equal to...; and, if the equal sides be produced, the angles on the other side of the base shall also be equal. Prove, without assuming any proposition subsequent... | |
 | Euclides - 1864 - 262 pagina’s
...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. Let ABC...triangle of which the side AB is equal to AC, and let the equal sides AB, ACbe produced to D and E. • Then the angle ABC shall be equal to the angle ACB, and... | |
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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. 
