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" A rhombus is that which has all its sides equal, but its angles are not right angles. "
Mensuration for beginners [With] Answers - Side 33
av William Dodds - 1883
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Mensuration for Beginners: With Numerous Examples

Isaac Todhunter - 1869 - 296 sider
...a parallelogram with all its angles right angles. A square is a rectangle with all its sides equal. A rhombus is a parallelogram which has all its sides equal, but its angles are not right angles. A trapezoid has two sides parallel. 13. Any side of a triangle may be called the base ; then the height...
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An elementary course of plane geometry and mensuration

Richard Wormell - 1870 - 276 sider
...Fig. 94. 112. A parallelogram is a quadrilateral having its opposite sides parallel (fig. 93). 113. A rhombus is a parallelogram which has all its sides equal, but not all its angles equal (fig. 94). J Fig. 95. Fig. 96. Fig. 97. . 114. A rectangle has all its angles...
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The first and second books of Euclid explained to beginners, by C.P. Mason

Euclid, Charles Peter MASON - 1872
...square is a four-sided figure, -with all its sides equal, and all its angles right angles.) Def. XXXIII. A rhombus is a parallelogram -which has all its sides equal, but its angles not right angles. Def. XXXIV. A trapezium is a four-sided figure, -which has two of its sides parallel....
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A school Euclid, being books i. & ii. of Euclid's Elements, with notes by C ...

Euclides - 1874
...oblong is that which has all its angles right angles, but not all its sides equal. 32. A rhombus is that which has all its sides equal, but its angles are not right angles. 33. A rhomboid is that which has its opposite sides equal to one another, but all its sides are not...
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Pure mathematics, Volum 1

Edward Atkins - 1874
...oblong is that which has all its angles right angles, but not all its sides equal. 32. A rhombus is that which has all its sides equal, but its angles are not right angles. / / 33. A rhomboid is that which has its / / opposite sides equal to one another, but all its L f sides...
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Euclidian Geometry

Francis Cuthbertson - 1874 - 349 sider
...straight lines. An oblong ' has all its angles right angles, but has not all its sides equal. A rhombus has all its sides equal, but its angles are not right angles. A trapezoid is a four-sided figure which has two of its sides parallel, and the remaining two not parallel....
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Plane and solid geometry, by G.E. Webster and A. Gardiner

George E. Webster - 1874
...Oblong has its opposite sides equal to each other, and all the angles are right angles. 29- A Rhombus has all its sides equal, but its angles are not right angles. 30- A Rhomboid has its opposite sides equal to one another, but its angles, not right angles. 31- A...
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The Elements of Euclid, containing the first six books, with a selection of ...

Euclides - 1874
...oblong is that which has all its angles right angles, but has not all its sides equal. 32. A rhombus has all its sides equal, but its angles are not right angles. 33. A rhomboid'has its opposite sides equal to each other, but all its sides are not equal, nor its...
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Mensuration for elementary and middle class schools

Henry Lewis (M.A.) - 1875 - 85 sider
...angles. A rectangle (or oblong) has its opposite sides equal, and all its angles right angles. A rhombus has all its sides equal, but its angles are not right angles. A rhomboid has its opposite sides equal, but its angles are not right To find the area of a rhombus...
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A graduated course of problems in practical plane and solid geometry

James Martin (of the Wedgwood inst, Burslem.) - 1876
...angles right angles. Ex. ABCD — AD NOTE. — This kind of parallelogram is also termed an oblong. 5. A rhombus is a parallelogram which has all its sides equal, but its angles are not right angles. Ex. A BCD — AD NOTE. — In each case its opposite angles are equal to each other. 6. A rhomboid...
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