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" An oblong is that which has all its angles right angles, but has not all its sides equal. "
Mensuration of lines, areas, surfaces, and volumes - Page xv
by Robert Rawson - 1856
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Gradations in Euclid : books i. and ii., with an explanatory preface [&c ...

Euclides - 1858 - 248 pages
...equal to two rt. angles. Ax. 3. If equals be taken from equals, the remainders are equal. Def. 30. Of four-sided figures a square is that which has all its sides equal, and all its angles rt. angles. B Given the st. line A 15 ; it is required to draw a square on AB. From A draw AC at rt.angles...
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The Train, Volume 5

1858 - 402 pages
...with'all his 'cuteness, has cut his own fingers repeatedly, and will to the end of the chapter. xxv. Of four-sided figures, a square is that which has all its sides equal, and 234 THE TBA1X. all its angles ri^ht angles. No nearer approach to a regular square in character, has...
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The Mechanic's, Machinist's, and Engineer's Practical Book of Reference

Charles Haslett, Charles William Hackley - Engineering - 1859 - 574 pages
...cubic feet, inches, <fec. mensuration of Superficies. Rectangle. ! 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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Euclid's Elements of Geometry: Chiefly from the Text of Dr. Simson, with ...

Robert Potts - Geometry, Plane - 1860 - 380 pages
...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....angles right angles, but has not all its sides equal. XXXH. A rhombus has all its sides equal, but its angles are not right angles. xxxm. A rhomboid has...
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Euclid's Elements of plane geometry [book 1-6] explicitly enunciated, by J ...

Euclides - 1860 - 288 pages
...sides are respectively equal, they are said to be equilateral. 40. A square is a four-sided figure which has all its sides equal, and all its angles right angles, as S. 41. An oblong or rectangle is a four-sided figure which has all its angles right angles, but...
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Commercial class book

Alfred Newsom Niblett - 1861 - 204 pages
...parallel and equal. and admits of four varieties, viz: 1. The SQUARE. A square is a quadrilateral figure, which has all its sides equal, and all its angles right angles. N R.-A right angle is formed by two straight lines which are perpen. dicular to each other. An oblong...
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The school Euclid: comprising the first four books, by A.K. Isbister

Euclides - 1862 - 172 pages
...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...angles right angles, but has not all its sides equal. XXXII. A rhombus, is that which has all its sides equal, but its angles are not right angles. XXXIII....
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Euclid's Elements of geometry, books i. ii. iii. iv

Euclides - 1862 - 140 pages
...that which has an obtuse angle. 29. An acute-angled triangle is that which has three acute angles. 30. Of four-sided figures, a square is that which has...its sides equal, and all its angles right angles. 31. An oblong is that which has all its angles right angles, but not all its sides equal. 32. A rhombus...
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The elements of plane geometry; or, The first six books of Euclid, ed. by W ...

Euclides - 1863 - 122 pages
...an obtuse ./f xxrx. An acute-angled triangle is that which has three acute ./\ angles. ^-—t XXX. Of four-sided figures, a square is that which has...oblong is that which has all its angles right angles, I but has not all its sides equal. ' L- 1 A rhombus is that which has all its sides equal, but its...
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The school edition. Euclid's Elements of geometry, the first six books, by R ...

Euclides - 1864 - 448 pages
...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....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...
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