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" A rhombus is that which has all its sides equal, but its angles are not right angles. "
The First Six Books with Notes - Página 3
por Euclid - 1822 - 179 páginas
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A system of practical mathematics; being no.xvi. of a new series of school-books

Scottish school-book assoc - 1845
...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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Euclid in Paragraphs: The Elements of Euclid: Containing the First Six Books ...

Euclid - 1845 - 199 páginas
...acute-angled triangle, is that which has three acute angles. XXX. Of four-sided figures, a square is that which has all its 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....
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The Elements of Euclid, the parts read in the University of Cambridge [book ...

Euclides - 1846
...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 all its angles right angles : xxxi. An oblong is that which has all its angles right angles, but not all its sides equal : xxxn....
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Elements of Drawing and Mensuration Applied to the Mechanic Arts: A Book for ...

Charles Davies - 1846 - 240 páginas
...altitude. Thus, AC is the altitude. 9. Name the different kinds of quadrilaterals. First. — The square, which has all its sides equal, and all its angles right angles. Second. — The rectangle, which has its angles right angles, and its opposite sides equal and parallel....
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Elements of Geometry: Containing the First Six Books of Euclid, with a ...

John Playfair - 1846 - 317 páginas
...acute angled triangle is that which 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. 28. A...
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The first book of Euclid's Elements, simplified, explained and illustrated ...

Euclides - 1847
...acute.angled triangle is that which has three acute angles. 29. Of four.sided figures, a square is that which has all its sides equal, and all its angles right angles. 30. An oblong is that which has all its angles right angles, but has not all its sides equal. Called...
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An Essay Upon the Study of Geometry in Common Schools

Stephen Chase - 1847 - 26 páginas
...before any demonstration of the properties of quadrilaterals, the square is defined as "a quadrilateral, which has all its sides equal, and all its angles right angles " ; the rectangle, as one " which has its opposite sides equal, and its angles right angles " ; the...
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First Lessons in Geometry: Upon the Model of Colburn's First Lessons in ...

Alpheus Crosby - 1847 - 164 páginas
...before any demonstration of the properties of quadrilaterals, the square is defined as "a quadrilateral, which has all its sides equal, and all its angles right angles " ; the rectangle, as one " which has its opposite sides equal, and its angles right angles " ; the...
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The millwright & engineer's pocket companion

William Templeton (engineer.) - 1848
...cubic feet, inches, &c. MENSURATION OF SUPERFICIES. Square. Rectangle. A s A Rhomboid. -/T7 D cai) ca A SQUARE is a quadrilateral figure which has all its sides equal, and all its angles right angles. A RECTANGLE is a four-sided figure which has its angles, right angles, and its opposite sides parallel....
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The first three books of Euclid's Elements of geometry, with theorems and ...

Euclides - 1849
...angled triangle, is that which has three acute angles. XXX. Of four-sided figures, a square is that which has all its sides equal, and all its angles right angles. XXXI. An oblong, is that which has all its angles right angles, but has not all its sides equal. XXXII....
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