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A parallelogram is a four.sided figure, of which the opposite sides are parallel; and the diameter is the straight line joining two of its opposite angles.
The practice of navigation and nautical astronomy - Page 38
by H. Raper - 1908 - 934 pages

The Elements of Euclid; viz. the first six books, together with the eleventh ...

Euclides - 1814
...equal to one another, and the diameter bisects them, that is, divides them into two equal parts. NB A parallelogram is a four-sided figure, of which the opposite sides are parallel ; and the diameter is the straight line joining tico of its opposite angles. Let ACDB be a parallelogram,...

An Easy Introduction to the Mathematics: In which the Theory and ..., Volume 2

Charles Butler - Mathematics - 1814
...such as are in the same plane, and which, being produced ever so far both ways, do not meet. 3 1 . A parallelogram is a four-sided figure, of which the opposite sides are parallel. 32. The diameter or diagonal of a parallelogram is a straight line whicb joins any two of its opposite...

Elements of Geometry: Containing the First Six Books of Euclid: With a ...

John Playfair - 1819 - 317 pages
...are equal to one another, and the diameter bisects it, that is, divides it into two equal parts. NB A Parallelogram is a four-sided figure, of which the opposite sides are parallel ; and the diameter is the straight line joining two of its opposite angles. Let ACDB be a parallelogram,...

A Grammar of Logic and Intellectual Philosophy, on Didactic Principles: For ...

Alexander Jamieson - Knowledge, Theory of - 1822 - 304 pages
...tell us, that "a square is a figure which has four equal sides, and four right angles," and that " a parallelogram is a foursided figure, of which the opposite sides are parallel." (Art. 170. lllus. and Corol.) Analysis. The things defined are species, that is, the square and vhe...

A Popular Course of Pure and Mixed Mathematics ...: With Tables of ...

Peter Nicholson - Mathematics - 1825 - 372 pages
...equal to one another, and the diameter bisects them, thai is, divides them into two equal parts. NB A parallelogram is a four-sided figure, of which the opposite sides are parallel ; and the diameter is the straight line joining two of its opposite angles. Let ABCD be a parallelogram,...

The Elements of Euclid: The Errors by which Theon, Or Others, Have Long ...

Robert Simson - Trigonometry - 1827 - 513 pages
...equal to one another, and the diameter bisects them, that is, divides them into two equal parts. NB A parallelogram is a four-sided figure, of which the opposite sides are parallel : and the diameter 1s the straight line joining two of its opposite angles. Let ACDB be a parallelogram,...

A Grammar of Logic and Intellectual Philosophy: On Didactic Principles ...

Alexander Jamieson - Logic - 1835 - 304 pages
...will tell us that " a square is a figure which has four equal sides ind four right angles," and that " a parallelogram is a foursided figure, of which the opposite sides are parallel." (Art. 170. Illus. and Carol.) Analysis. The things defined are species ; that is, the square and the...

Popular Mathematics: Being the First Elements of Arithmetic, Algebra, and ...

Robert Mudie - Mathematics - 1836 - 496 pages
...properties of PARALLELOGRAMS, RECTANGLES, AND SQUARES, t and the relations which they have to triangles. A PARALLELOGRAM is a four-sided figure, of which the opposite sides are parallel ; and a line joining the opposite angles either way, is called the diameter of the parallelogram. This...