 | Euclides - 1858 - Liczba stron: 248
...equal, and its angles rt. angles. 5. I. The angles at the base of an isosceles triangle are equal, and if the equal sides be produced, the angles on the other side of the base shall be equal. Ax. 1. Magnitudes, &c. 6. I. If two angles of a triangle be equal to one another, the sides also which... | |
 | War office - 1858 - Liczba stron: 578
...isosceles triangle : prove that 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 will be equal. Enunciate the proposition in Euclid's First Book, in the proof of which, the property,... | |
 | Elias Loomis - 1858 - Liczba stron: 256
...less than the sum of BA and AC, Therefore, if from a point, &c. PROPOSITION X. THEOREM. The angles at the base of an isosceles triangle are equal to one another. Let ABC be an isosceles triangle, of which the side AB is equal to AC ; then will the angle B be equal... | |
 | 1859 - Liczba stron: 414
...trapezium, and parallel straight lines. 2. The angles at the base of an isosceles triangle are equal, and if the equal sides be produced the angles on the other side of the base shall be equal. 186 (II.)— SCSS. 2. GG3 3. Any JL 3. Any two sides of a triangle are together greater than the third... | |
 | Thomas Stantial - 1859 - Liczba stron: 352
...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.... | |
 | Royal college of surgeons of England - 1860 - Liczba stron: 332
...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...angles on the other side of the base shall be equal. 3. If two straight lines cut one another, the angles which they make at the point where they cut, are... | |
 | Robert Potts - 1860 - Liczba stron: 380
...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 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... | |
 | War office - 1861 - Liczba stron: 714
...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...another; and if the equal sides be produced, the angles upon the other side of the base shall be equal. 2. The straight lines which join the extremities of... | |
 | Euclides - 1862 - Liczba stron: 140
...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...another; and if the equal sides be produced, the angles upon the other side of the base shall also be equal. (References — Prop. I. 3, 4; ax. 3.) Hypothesis.... | |
 | Robert Potts - 1863 - Liczba stron: 482
...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...produced, the angles on the other side of the base shall also be equal. Prove, without assuming any proposition subsequent to the preceding, that the diagonals... | |
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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. 
