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" And lastly, the trapezoid, only two of whose sides are parallel. 18. A diagonal is a line which joins the vertices of two angles not adjacent to each other. Thus, AF, AE, AD, AC, are diagonals. "
Elements of Surveying: With a Description of the Instruments and the ... - Page 20
by Charles Davies - 1839 - 261 pages
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Elements of Geometry

Adrien Marie Legendre - Geometry - 1819 - 574 pages
...angles right angles ; Fig. 15. The irapezoid (Jig. 1 5), \\ hich has two only of its sides parallel. 18. A diagonal is a line which joins the vertices of two angles not adjacent, as AC (Jig. 42). Fig. 42. 19. An i't] a Unit ml polygon is one which has all its sides equal ; an equiangular...
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Elements of Geometry and Trigonometry: With Notes

Adrien Marie Legendre - Geometry - 1822 - 394 pages
...without having its angles right. And, lastly, the trapezium, only two of whose sides are parallel. XVIII. A diagonal is a line which joins the vertices of two angles not adjacent to each other. AC, in the diagram of Prop. 28, is a diagonal. XIX. An equilateral polygon is one which has all its...
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Elements of Geometry...: Translated from the French for the Use of the ...

Adrien Marie Legendre, John Farrar - Geometry - 1825 - 294 pages
...its opposite sides par' allel ; Fig. 14. The rhombus or lozenge (fig. 14), which has its sides equal 18. A diagonal is a line which joins the vertices of two angles not adjacent, as AC (fig. 42). Fig.4!. 19. An equilateral polygon is one which has all its sides equal ; an equiangular...
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Elements of Geometry...: Translated from the French for the Use of the ...

Adrien Marie Legendre, John Farrar - Geometry - 1825 - 280 pages
...The rhombus or lozenge (fig. 14), which has its sides equal without having its angles right angles ; 18. A diagonal is a line which joins the vertices of two angles not adjacent, as AC (fig. 42). Fig. 42. 19. An equilateral polygon is one which has all its sides equal ; an equiangular...
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Elements of Geometry

Adrien Marie Legendre - 1825 - 570 pages
...The rhombus or lozenge (fig. 14), which has its sides equal without having its angles right angles ; 18. A diagonal is a line which joins the vertices of two angles mot adjacent, as AC (fig. 42). Fig. 19. An equilateral polygon is one which has all its sides equal;...
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Elements of Geometry and Trigonometry: With Notes

Adrien Marie Legendre - Geometry - 1828 - 346 pages
...having its angles right angles. And, lastly,. the trapezoid, only two of whose sides are parallel. 18. A diagonal is a line which joins the vertices of two angles not adjacent to each other. Thus, AC, AD, AE: AF, in the diagram of Art. 79, are diagonals. 19. An equilateral polygon is one which hus...
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Elements of Geometry: Containing the First Six Books of Euclid, with a ...

John Playfair - Euclid's Elements - 1835 - 336 pages
...two of whose sides are parallel. 29. All other four sided figures are usually called trapeziums. 30. A diagonal is a line which joins the vertices of two angles not adjacent to each other. Thus, BC, in the diagram of Theor. 27. is a diagonal. 31. An equilateral polygon, is one which has all its...
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Elements of Geometry and Trigonometry

Adrien Marie Legendre - Geometry - 1836 - 394 pages
...without having its angles right angles. And lastly, the trapezoid, only two of whose sides are parallel. 18. A diagonal is a line which joins the vertices...other. Thus, AF, AE, AD, AC, are diagonals. 19. An equilateral polygon is one which has all its sides equal ; an equiangular polygon, one which has all...
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Elements of Geometry and Trigonometry

Adrien Marie Legendre - Geometry - 1838 - 382 pages
...trapezoid, only two of whose sides are parallel. 18. A diagonal is a line which joins the verlices of two angles not adjacent to each other. Thus, AF, AE, AD, AC, are diagonals. VT Jf 19. An equilateral polygon is one which has all its sides equal ; an equiangular polygon, one...
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Elements of Surveying: With a Description of the Instruments and the ...

Charles Davies - Surveying - 1839 - 376 pages
...without having its angles right angles. And lastly, the trapezoid, only two of whose sides are parallel. 18. A diagonal is a line which joins the vertices...is a self-evident proposition. 20. A theorem is a trmh, which becomes evident by means of a train of reasoning called a demonstration. 21. A problem...
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