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 Βιβλία Βιβλία 1 - 10 από 26 για B, c, &c, together ; for when the work is right, their sum will be equal to twice....
B, c, &c, together ; for when the work is right, their sum will be equal to twice as many right angles as the figure has sides, wanting 4 right angles.
The Young Gentleman's Arithmetick, and Geometry: Containing Such Elements of ... - Σελίδα 209
των Edward Wells - 1714 - 292 σελίδες
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Euclid's Elements of Geometry: The First Six, the Eleventh and Twelfth Books

Euclid - 1765 - 464 σελίδες
...is, has fides. But fince all the inward angles together, with four right angles, has been proved to be equal to twice as many right angles as the figure has fides ; therefore all the inward angles, together with four right angles, is equal to all the inward...

A Treatise on Mensuration, Both in Theory and Practice

Charles Hutton - 1788 - 703 σελίδες
...work ; add all the inward angles A, B, c, &c, together, and when the work is right, their fum will be equal to twice as many right angles as the figure has fides, wanting 4 right angles. And when there is an angle, as F, that bends inwards, and you meafure...

Mathematics: Compiled from the Best Authors and Intended to be the ..., Τόμος 2

1801 - 426 σελίδες
...work ;• add all the inward angles A, B, C, &c. together, and when the work is right, their sum will be equal to twice as many right angles, as the figure has sides, wanting four right angles. And when there is an angle, as F, that bends inward, and you measure...

The Accomplished Tutor; Or, Complete System of Liberal Education ..., Τόμος 1

Thomas Hodson - 1806 - 458 σελίδες
...the work ; — add all the inward angles ABC, &c. together ; and if the work be right, the fum will be equal to twice as many right angles as the figure has fides, except four right angles ; but when there is an angle that bends inwards, as at F, and you meafure...

A Course of Mathematics ...: Composed for the Use of the Royal Military ...

Charles Hutton - 1811
...work ; add all the inward angles A, B, c, &C, together ; for when the work is right, their sum will be equal to twice as many right angles as the figure has sides, wanting 4 right angles. But when there is an angle, as F, that bends inwards, and you measure...

A Course of Mathematics: For the Use of Academies as Well as ..., Τόμος 1

Charles Hutton - 1812
...work ; add all the inward angles A, B, c, &c, together ; for when the work is right, their sum will be equal to twice as many right angles as the figure has sides, wanting 4 right angles. But when there is an angle, as F, that bends inwards, and you measure...

A Course of Mathematics: For the Use of Academies, as Well as Private ...

Charles Hutton - 1822
...work ; add all the inward angles A, n, c, &.c. together ; for when the work is right, their sum will be equal to twice as many right angles as the figure has sides, wanting 4 right angles. But when there is an angle, a* r, (hat bends inward*, and yon measure...

Elements of the Geometry of Planes and Solids: With Four Plates

Ferdinand Rudolph Hassler - 1828 - 159 σελίδες
...all the angles of the triangles, there remain all the angles of the poligon, their sum will therefore be equal to twice as many right angles as the figure has sides wanting these four right angles; as was to be demonstrated. Carol. 1. When all the sides or all...

The London Encyclopaedia: Or, Universal Dictionary of Science, Art ..., Τόμος 10

Thomas Curtis - 1829
...exterior angle being equal to two right angles (Theorem VI.), all the interior and exterior angles will be equal to twice as many right angles as the figure has sides, or equal to the interior angles and four right angles ; therefore the exterior angles are equal...

A Treatise on Mensuration for the Use of Schools

1837 - 262 σελίδες
...as you go along, as also the angles. angles, A, B, C, &c. of the figure together, and their sum must be equal to twice as many right angles as the figure has sides, wanting four right angles. But when the figure has a re-enterant angle, as F, measure the external...