## A graduated course of problems in practical plane and solid geometry |

### Inni boken

Resultat 1-5 av 46

Side

By the aid of this instrument , any number of lines may be

given line , and at any given distance from each other . 8 . The Protractor . — This

instrument is used for measuring angles , and for laying down angles on paper of

...

By the aid of this instrument , any number of lines may be

**drawn**parallel to agiven line , and at any given distance from each other . 8 . The Protractor . — This

instrument is used for measuring angles , and for laying down angles on paper of

...

Side

GENERAL HINTS ON

lead pencil . The lines should be as fine as possible , the india - rubber being

used sparingly , before the

course ...

GENERAL HINTS ON

**DRAWING**. The figures should be first**drawn**with a blacklead pencil . The lines should be as fine as possible , the india - rubber being

used sparingly , before the

**drawing**is inked in . The**drawing**paper should ofcourse ...

Side 4

A radius ( plural radii ) is a straight line

circumference . Ex . AB17 . A diameter is a straight line

and terminated at both extremities by the circumference . Ex . AB 18 . A semicircle

is half a ...

A radius ( plural radii ) is a straight line

**drawn**from the centre to thecircumference . Ex . AB17 . A diameter is a straight line

**drawn**through the centre ,and terminated at both extremities by the circumference . Ex . AB 18 . A semicircle

is half a ...

Side 23

The altitude of a triangle is its perpendicular height , i . e . , the length of a

perpendicular

AB13 . The perimeter of a figure is its whole boundary . Thus , if one side of an

equilateral ...

The altitude of a triangle is its perpendicular height , i . e . , the length of a

perpendicular

**drawn**from the vertex to the base , or to the base produced . Ex .AB13 . The perimeter of a figure is its whole boundary . Thus , if one side of an

equilateral ...

Side 26

Perpendiculars

. They would thus become the radii of a circle which might be inscribed within the

triangle ( Euc . IV . 4 . ) Problem 23 . To construct a triangle , its base AB and ...

Perpendiculars

**drawn**from D to the three sides of the triangle are equal in length. They would thus become the radii of a circle which might be inscribed within the

triangle ( Euc . IV . 4 . ) Problem 23 . To construct a triangle , its base AB and ...

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altitude arc cutting Atlas axis base bound called centre circumference cloth complete cone construct contained curve cutting cylinder describe a circle describe an arc describe arcs determine diagonal distance divide division draw a line draw lines drawn edge elevation ellipse equal equal in area equilateral triangle extremities face figure four given circle given line given point given triangle ABC half height hexagon horizontal plane inches inclined inscribe intersection isosceles triangle Join length lines parallel Maps mark meeting NOTE obtain parallel parallelogram pass pentagon perpendicular Philips plane of projection polygon prism Problem produced projection projectors pyramid radii radius rectangle rectilineal figure regular represent required circle respectively right angles scale seen semicircle sides similar solid square tangent touching traces trapezium vertical plane

### Populære avsnitt

Side 295 - Philips' Preparatory Atlas, Containing Sixteen Maps, full colored. Crown quarto, in neat cover, 6d. Philips Preparatory Outline Atlas. Sixteen Maps. Crown quarto, printed on fine cream-wove paper, in neat cover, 6d. Philips Preparatory Atlas of Blank Projections. Sixteen Maps. Crown quarto, printed on fine cream-wove paper, in neat cover, 6d. Philips Elementary Atlas for Young Learners.

Side 294 - Young Student's Atlas, Comprising Thirty-six Maps of the Principal Countries of the World, printed in colors. Edited by W. Hughes, FRGS Imperial 41.0., bound in cloth, 33. 6d. Philips Atlas for Beginners, Comprising Thirty-two Maps of the Principal Countries of the World, constructed from the best authorities, and engraved in the best style. New and enlarged edition, with a valuable Consulting Index, on a new plan.

Side 193 - A cone is a solid figure described by the revolution of a right-angled triangle about one of the sides containing the right angle, which side remains fixed. If the fixed side be equal to the other side containing the right angle, the cone is called a right-angled cone ; if it be less than the other side, an obtuse-angled ; and if greater, an acute-angled cone. XIX. The axis of a cone is the fixed straight line about which the triangle revolves.

Side 123 - A straight line is said to be cut in extreme and mean ratio, when the whole is to the greater segment as the greater segment is to the less.