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" A trapezoid has only two of its sides parallel ; as ABCD. (Fig. 4.) Any other four sided figure is called a trapezium. II. A figure which has more than four sides is called a polygon. A regular polygon has all its sides equal, and all its angles equal.... "
Introduction to Linear Drawing - Σελίδα 21
των Louis-Benjamin Francœur, William Bentley Fowle - 1825 - 64 σελίδες
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A Practical Application of the Principles of Geometry to the Mensuration of ...

Jeremiah Day - 1815 - 96 σελίδες
...sided figure is called a trapezium. II. A .figure which has more than four sides is called a polygon. A regular polygon has all its sides equal, and all its angles equal. -. %, , III. The height of a triangle is the length of a perpendicular, drawn from one of the...

Lineal drawing and introduction to geometry, as taught in the Lancastrian ...

Louis Benjamin Francoeur - 1824 - 86 σελίδες
...centres. A regular polygon is that, which having all its sides equal, has also all its angles equal. When such a polygon is inscribed in a circle, the sides are chords of equal segments of the circle, and the vertices cut the circumference into equal parts. 22....

The Second [-fifth and Sixth] Part of A Course of Mathematics: Adapted to ...

Jeremiah Day - 1824
...sided figure is called a trapezium. II. A figure which has more than four sides is called a polygon. A regular polygon has all its sides equal, and all its angles equal. III. The height of a triangle is the length of a perpendicular, drawn from one of the angles...

The Principles of Plane Trigonometry, Mensuration, Navigation and Surveying

Jeremiah Day - 1831 - 370 σελίδες
...sided figure is called a trapezium. II. A figure which has more than four sides is called a polygon. A regular polygon has all its sides equal, and all its angles equal. III. The height of a triangle is the length of a perpendicular, drawn from one of the angles...

A Treatise of Plane Trigonometry: To which is Prefixed a Summary View of the ...

Jeremiah Day - 1831 - 155 σελίδες
...sided figure is called a trapezium. II. A figure which has more than four sides is called a polygon. A regular polygon has all its sides equal, and all its angles equal. III. The height of a triangle is the length of a perpendicular, drawn from one of the angles...

A Course of Mathematics: Containing the Principles of Plane Trigonometry ...

Jeremiah Day - 1838
...sided figure is called a trapezium. II. A figure which has more than four sides is called a polygon. ' A regular polygon has all its sides equal, and all its angles equal. III. The height of a triangle is the length of a perpendicular, drawn from one of the angles...

A Course of Mathematics: Containing the Principles of Plane Trigonometry ...

Jeremiah Day - 1839 - 370 σελίδες
...sided figure is called a trapezium. II. A figure which has more than four sides is called a polygon. A regular polygon has all its sides equal, and all its angles equal. III. The height of a triangle is the length of a perpendicular, drawn from one of the angles...

A Treatise of Plane Trigonometry, and the Mensuration of Heights and ...

Jeremiah Day - 1848 - 153 σελίδες
...sided figure is called a trapezium. II. A figure which has more than four sides is called a polygon. A regular polygon has all its sides equal, and all its angles equal. III. The height of a triangle is the length of a perpendicular, drawn from one of the angles...

The Eye and Hand: Being a Series of Practical Lessons in Drawing, for the ...

William Bentley Fowle - 1849 - 94 σελίδες
...point of contact and the two centres will be in a right line, and these may be tested with a rule. A regular polygon has all its sides equal, and all...a polygon is inscribed in a circle, the sides are chords of equal arcs, and the points cut the circle into equal parts. 26. Inscribe a regular octagon,...

A Course of Mathematics: Containing the Principles of Plane Trigonometry ...

Jeremiah Day - 1851
...sided figure is called a trapezium. II. A figure which has more than four sides is called a polygon. A regular polygon has all its sides equal, and all its angles equal. III. The height of a triangle is the length of a perpendicular, drawn from one of the angles...




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