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Bøker Bok 5160 av 161A rhomboid, is that which has its opposite sides equal to one another, but all its...
" A rhomboid, is that which has its opposite sides equal to one another, but all its sides are not equal, nor its angles right angles. "
The Elements of Euclid: Viz. the First Six Books, Together with the Eleventh ... - Side 2
av Euclides - 1816 - 528 sider
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Elements of Mental Philosophy Enbracing the Two Departments of the ..., Volum 1

Thomas Cogswell Upham - 1841
...brought out by a successive comparison of propositions. We say, for instance, that a square is a figure, which has all its sides equal, and all its angles right angles. In this definition there is not only involved equality of sides, but equality of angles. And it is...
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Elements of geometry: consisting of the first four,and the sixth, books of ...

Euclides - 1842
...which has an obtuse angle. XXIX. An acute-angled triangle is that which has three acute angles. XXX. Of four-sided figures, a square is that which has...its sides equal. XXXII. A rhombus is that which has all its sides equal, but its angles are not right angles. XXXIII. A rhomboid is that which has its...
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Elements of Geometry: Containing the First Six Books of Euclid, with a ...

John Playfair - 1842 - 317 sider
...obtuse angle. 24. An acute angled triangle is that whick has three acute angles. 25. Of four sided figures, a square is that which has all its sides equal and all its angles right angles. 26. An oblong is that which has all its angles right angles, but has not all its sides equal. 27. A...
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A course of practical geometry for mechanics

William Pease - 1843 - 68 sider
...which has an obtuse angle. The two remaining angles will necessarily be acute. XXX. Of four -sided figures, a square is that which has all its sides...angles right angles, but has not all its sides equal. Its opposite sides are necessarily equal. XXXII. A rhombus is that which has all its sides equal, but...
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Lectures on the Principles of Demonstrative Mathematics

Philip Kelland - 1843 - 147 sider
...figures as contain more sides than angles, such as A., which are called by Zenodorus * In Def. 27. Of four-sided figures a square is that which has all its sides equal, and one of its angles a right angle. It has been properly objected to some of Euclid's definitions, that...
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Euclid's Elements of geometry [book 1-6, 11,12] with explanatory notes ...

Robert Potts - 1845
...triangle is that which has three acute angles. XXX. Of quadrilateral or four-sided figures, a square has all its sides equal and all its angles right angles....but has not all its sides equal. XXXII. A rhombus has all its sides equal, but its angles are not right angles. XXXIII. A rhomboid has its opposite sides...
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Euclid in Paragraphs: The Elements of Euclid: Containing the First Six Books ...

Robert Simson - 1845 - 199 sider
...which has an obtuse angle. XXIX. An acute-angled triangle, is that which has three acute angles. XXX. Of four-sided figures, a square is that which has...sides equal, and all its angles right angles. XXXI. XXXII. A rhombus, is that which has all its sides equal, but its angles are not right angles. XXX1I1....
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A system of practical mathematics; being no.xvi. of a new series of school-books

1845
...which has one obtuse angle. 31. An acute angled triangle has all its angles acute. 32. Of four- sided figures, a square is that which has all its sides equal, and all its angles right angles. 33. A rectangle is that which has all its angles right angles, but all its sides are not equal. 34....
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The first six and the eleventh and twelfth books of Euclid's Elements; with ...

James Thomson - 1845 - 358 sider
...also are two angles which are together equal to two right angles. -, A square is a four-sided figure which has all its sides equal and all its angles right angles. " A rhombns is a four-sided figure which has all its sides equal ; but its angles are not right angles."...
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The Elements of Euclid, the parts read in the University of Cambridge [book ...

Euclides - 1846
...: xxix. An acute-angled triangle is that which has three acute angles. Of four-sided figures, xxx. A square is that which has all its sides equal, and...is that which has all its angles right angles, but not all its sides equal : xxxn. A rhombus is that which has all its sides equal, but its angles are...
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