 | James Blaikie, William Thomson - 1891
...triangles shall be equal in every respect. 5. 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 also be equal. Cor.— Every equilateral triangle is also equiangular. 6. If two angles of a triangle... | |
 | Herbert Greenhough Smith, Sir George Newnes, George Newnes, Limited - 1901
...demonstrate, for example, that the angles at the base of an isosceles triangle are equal, and that if the equal sides be produced the angles on the other side of the base are equal also ; or that the square on the hypotenuse of a right-angled triangle is equal to the sum... | |
 | Euclid - 1892 - 518 σελίδες
...equal in all respects; i.4. so that XC is equal to YB. i;.E.II. PROPOSITION 5. THEOREM. The angles at the base of an isosceles triangle are equal to one another; and if the equal sides be produced, tk angles on the other side of the base shall also be equal to on another. Let ABC be an isosceles... | |
 | James Sully - 1892 - 894 σελίδες
...respect to discrete or numerical quantity, eg, 3 -f 2 = 5, or to continuous quantity, eg, " The angles at the base of an isosceles triangle are equal to one another". Such equality is plainly likeness in respect of quantity or amount. It constitutes the type of perfect... | |
 | James Sully - 1892 - 524 σελίδες
...respect to discrete or numerical quantity, tg, 3 + 2 = 5. or to continuous quantity, eg, " The angles at the base of an isosceles triangle are equal to one another." Such equality is plainly likeness in respect of quantity or amount. It constitutes the type of perfect... | |
 | Queensland. Department of Public Instruction - 1897
...and 6 1. Define— Plane parallelogram. 2. The angles at the base of an isosceles triangle »re 21 equal to one another ; and if the equal sides be produced, the angles on the other side of the base sha, I also be equal to one another. 3. To bisect a given angle ; that is, to divide it into two 14... | |
 | 1897
...GEOMETRY. The Board of Examiners. Any intelligible abbreviations are allowed. 1. Prove that the angles at the base of an isosceles triangle are equal to one another. Any point is taken on the straight line joining the vertices of two isosceles triangles on the same... | |
 | Aristotle - 1897 - 379 σελίδες
...proposition is arrived at in geometry. ' I am sure,' says a geometer to himself, ' that the angles at the base of an isosceles triangle are equal to one another ; but how am I to prove it? You can prove things equal to one another by showing that they are equal... | |
 | Augustus De Morgan - 1898 - 288 σελίδες
...necessary to make in them : 1. Parallel lines never meet, or parallel lines are lines which never meet. 2. The angles at the base of an isosceles triangle are equal, or an isosceles triangle is a triangle having the angles at the base equal. The different species of... | |
 | Seymour Eaton - 1899 - 340 σελίδες
...the angular point opposite that side is usually called the vertex. PROPOSITION 5. THEOREM 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 to one another. Let ABC be an isosceles triangle, having the side AB equal to the side... | |
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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. 
