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" 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. "
A course of practical geometry for mechanics - Page 13
by William Pease - 1843 - 68 pages
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The Geometrician: Containing Essays on Plane Geometry, and Trigonometry ...

Benjamin Donne - Geometry, Plane - 1775 - 338 pages
...four equal Sides, but its Angles not right Angles. 3337. A Rhomboïdes is that which has its. oppofite Sides equal to one another, but all its Sides are not equal, nor its Angles right ones. 'Note. For a Definition of a Parallelogram, fee Art. 9738. Scholium. In moft Copies of Euclid,...
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The philosophical and mathematical commentaries of Proclus ... on the first ...

Proclus (Diadochus.) - 1788 - 350 pages
...are not right Angles. " •. i I * " " DEFINITION XXXIIL A RHOMBOID is that which has its oppofite Sides equal to one another, but all its Sides are not equal, nor its Angles Right Angles, DEFINITION XXXIV. All other Quadrilateral Figures befldes thefe, are called TRAPEZIUMS. IT is requifite...
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Elements of Geometry: Containing the First Six Books of Euclid, with a ...

John Playfair - Mathematics - 1806 - 320 pages
...XXVII. A rhombus is that which has all its sides equal, but its angles are not right angles. XXVIII. A rhomboid is that which has its opposite sides equal...sides are not equal, nor its angles right angles. XXIX. All other four sided figures besides these are called ziums. Book I. XXX. . 1 Parallel straight...
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The Elements of Euclid: The Errors, by which Theon, Or Others, Have Long Ago ...

Robert Simson - Trigonometry - 1806 - 546 pages
...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 opposite...another, but .all its sides are not equal, nor its angles richt angles. ' ' xxxiy. Book i. AH other four sided figures, besides these, are called trape- *- .v—...
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The Elements of Euclid: Viz. the First Six Books, Together with the Eleventh ...

Euclid - Geometry - 1810 - 554 pages
...j\ j\ A, I 1 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 opposite sides equal to fine another, but all its sides are not equal, nor its angles right angles. XXXIV. Book I. XXXIV. All...
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Elements of Crystallography: After the Method of Haüy; With, Or Without ...

Friedrich Christian Accum - Crystallography - 1813 - 488 pages
...are all equal, but whose angles are not right angles, as Fig. 31. 31. A rhomboid is a parallelogram which has its opposite sides equal to one another,...all its sides are not equal, nor its angles right ones. See Fig. 32. 32. Fig. 33 is a trapezium. 33. Consequently every irregular quadrangle or quadrilateral,...
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Pantologia. A new (cabinet) cyclopædia, by J.M. Good, O. Gregory ..., Volume 5

John Mason Good - 1813 - 714 pages
...equal, but its ansies ar* not right angles. 33. A rhomboid, is that which has its opposite si.les equ?! to one another, but all its sides are not equal, nor its angles right angles. 34. All other four sided ligures besides these, are called trapeziums. 35. Parallel straight lines,...
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The Elements of Euclid; viz. the first six books, together with the eleventh ...

Euclides - 1814 - 560 pages
...XXXII. A rhombus, is that which has its sides equal, but its angles are not right angles. xxxiii. See N. A rhomboid, is that which has its opposite sides equal...sides are not equal, nor its angles right angles. XXXIV. All other four-sided figures besides these, are called Trapeziums. XXXV. Parallel straight lines,...
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The Elements of Euclid: Viz. the First Six Books, Together with the Eleventh ...

Euclides - 1816 - 588 pages
...A rhombus, is that which has its sides equal, but its angles are not right angles. XXX1II. . See N. A rhomboid, is that which has its opposite sides equal...sides are not equal, nor its angles . right angles. ...,../ ." ,.-' A XXXIV. Boo* I. All other four-sided figures besides these, are called Trapeziums....
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Elements of Geometry: Containing the First Six Books of Euclid: With a ...

John Playfair - 1819 - 354 pages
...rhombus, is that which has all its sides equal, but its angles are not ' right angles. - - _ . XXVIII. A rhomboid, is that which has its opposite sides equal...sides are not equal, nor its angles right angles. XXIX. All other four sided figures besides these, are called Trapeziums. XXX. Parallel straight lines,...
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