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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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Euclid's Elements of geometry, the first four books, by R. Potts. Corrected ...

Euclides - 1864 - 262 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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Euclid's Elements of Geometry: Chiefly from the Text of Dr. Simson ...

Robert Potts - 1865 - 528 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. xxxm. A rhomboid has...
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The College Euclid: Comprising the First Six and the Parts of the Eleventh ...

Euclides - 1865 - 402 pages
...has an obtuse angle. XXIX. An acute-angled triangle, is that which has three acute angles. B3 XXX. Of four-sided figures, a square is that which has...its sides equal, and all its angles right angles. XXXL An oblong, is that which has all its angles right angles, but has not all its sides equal. XXXIL...
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An English primer; compiled under the superintendence of E.C. Lowe

Edward Clarke Lowe - 1866 - 172 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 Euclid for the Use of Schools and Colleges: Comprising the ...

Isaac Todhunter - Euclid's Elements - 1867 - 426 pages
...angle : 29. An acute-angled triangle is that which has three acute angles. Of four-sided figures, 30. A square is that which has all 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...
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The Elements of Euclid for the Use of Schools and Colleges: Comprising the ...

Euclid, Isaac Todhunter - Euclid's Elements - 1867 - 424 pages
...angle : 29. An acute-angled triangle is that which has three acute angles. Of four-sided figures, 30. A square is that which has all 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...
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Euclid's Elements of Geometry: Chiefly from the Text of Dr. Simson, with ...

Robert Potts - 1868 - 434 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. XXXIL A rhombus has all its sides equal, but its angles are not right angles. XXXIII. A rhomboid has...
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Right lines in their places; or, The first principles of drawing and design ...

Ellis A. Davidson - 1869 - 136 pages
...quadrilateral figure has been sketched on the black board, and the pupil has been called upon to believe that " of four-sided figures, a square is that which has...its sides equal, and all its angles right angles." He is told that the diagonals of a square or other rectangle will be equal. He sees they are not so...
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The Educational Speeches of the Hon'ble John Bruce Norton

John Bruce Norton - Education, Higher - 1870 - 350 pages
...that, especially when the rudiments are mastered. Euclid always to speak of a square as " that figure which has all its sides equal, and all its angles right angles;" or to avoid the term circle by a round about allusion to it as " a plain figure contained by one line...
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The Acting Teacher's and Student's in Training Guide and Text Book for ...

Henry Major - Student teachers - 1873 - 592 pages
...tnangle has an ^/ obtuse angle. XXIX. An acute-Angled triangle has three acute angles. XXX. A square has all its sides equal, and all its angles right angles. XXXI. An oblong has all its angles right angles, but not all its sides equal. XXXII. A rhombus has its sides equal,...
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