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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. "
First principles of Euclid: an introduction to the study of the first book ... - Seite 88
von T S. Taylor - 1880
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Calendar

University of Sydney - 1901
...the whole distance from A to B being fifteen miles. GEOMETRY. TWO HOUBS AXD A-IIALK. 1. The angles at the base of an isosceles triangle are equal to one another, and, if the equal sides are produced, the angles on the other side of the base are also equal. 2. Describe a triangle, having...
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The School World, Band 3

1901
...out the Postulates. (2) The angles at the base of an isosceles triangle are equal, 234 [JUNE, 1901. and if the equal sides be produced the angles on the other side of the base are equal. (3) If a straight line fall across two parallel straight lines it shall make the alternate...
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The First Men in the Moon

Herbert George Wells - 1901 - 342 Seiten
...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...
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Logic

George Hugh Smith - 1901 - 266 Seiten
...slight variation in the statement of it to make this apparent, as, eg, as follows: Prop. V. The angles at the base of an isosceles triangle are equal to one another. Or, referring to the figure, in the isosceles triangle ABC the angles a and c are equal. The figure...
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Logic; Or, The Analytic of Explicit Reasoning

George Hugh Smith - 1901 - 266 Seiten
...slight variation in the statement of it to make this apparent, as, eg, as follows: Prop. V. The angles at the base of an isosceles triangle are equal to one another. Or, referring to the figure, in the isosceles triangle ABC the angles a and c are equal. The figure...
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Collected Essays, Band 1

Augustine Birrell - 1902
...be more difficult to prove 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 shall be equal, than it was to describe an equilateral triangle on a given finite straight line; yet no one but an...
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Manual

1903
...not measure it off with a graduated scale? How would you draw half a dozen such lines? 3. The angles at the base of an isosceles triangle are equal to one another : and, if the sides be produced, the angles on the other side of the base are also equal. 4. Show how to draw a straight...
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A Text-book of Euclid's Elements for the Use of Schools, Bücher 1

Euclid - 1904 - 456 Seiten
...angle BCD equal to the angle ADC : prove that BD is equal to AC. PROPOSITION 5. THEOBEM. 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. A Let ABC be an isosceles triangle, in which the side AB is equal to...
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Henley's Encyclopaedia of Practical Engineering and Allied Trades ...

1906
...famous pons asiitorum (the fifth proposition of the First Book of Euclid), which runs, " The angles at the base of an isosceles triangle are equal to...other side of the base shall be equal to one another," has the corollary, "Hence every equilateral triangle is al-Ji equiangular." Corrective Gauge. — fe...
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Henley's Encyclopædia of Practical Engineering and Allied Trades: A ...

Joseph Gregory Horner - 1906
...famous pons asinornin (the fifth proposition of the First Book of Euclid), which runs, " The angles at the base of an isosceles triangle are equal to...other side of the base shall be equal to one another," has the corollary, " Hence every equilateral triangle is also equiangular/' Corrective Gauge. — See...
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