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

### Inni boken

Resultat 1-5 av 77

Side

It consists of two rulers fixed parallel to each other by means of two

links which are fastened to the rulers at

, of one ruler being placed along a straight line , a pencil mark drawn along the ...

It consists of two rulers fixed parallel to each other by means of two

**equal**brasslinks which are fastened to the rulers at

**equal**distances by pivots . The edge , CD, of one ruler being placed along a straight line , a pencil mark drawn along the ...

Side 5

Ex . B . В NOTE 1 . - The circumference of every circle is supposed to be divided

into 360

180° ; a quarter of a circle , or a quadrant , 90° ; the sixth part , 60° , & c . NOTE 2 .

Ex . B . В NOTE 1 . - The circumference of every circle is supposed to be divided

into 360

**equal**parts , called degrees , marked . Hence , a semicircle will contain180° ; a quarter of a circle , or a quadrant , 90° ; the sixth part , 60° , & c . NOTE 2 .

Side 13

From C as centre , with the same radius , describe an arc DF , and make arc DF

Problem 10 . From a given point D , in the line AB , to make an angle

...

From C as centre , with the same radius , describe an arc DF , and make arc DF

**equal**to arc CE . 3 . Draw the line FC , and it will be parallel to the given line AB .Problem 10 . From a given point D , in the line AB , to make an angle

**equal**to the...

Side 14

To draw a line from a given point D , outside a given line AB , making with the

given line , an angle

DE parallel to AB ( Pr . 9 ) . A F 2 . At the point D make an angle EDF

...

To draw a line from a given point D , outside a given line AB , making with the

given line , an angle

**equal**to a given angle C . 1 . From the point D draw a lineDE parallel to AB ( Pr . 9 ) . A F 2 . At the point D make an angle EDF

**equal**to the...

Side 15

To draw straight lines from any two given points A and B , outside a given straight

line CD , so as to make

perpendicular AE on CD ( Pr . 3 ) , and produce it indefinitely towards F . 2 .

To draw straight lines from any two given points A and B , outside a given straight

line CD , so as to make

**equal**angles with the given line CD . 1 . From A , let fall aperpendicular AE on CD ( Pr . 3 ) , and produce it indefinitely towards F . 2 .

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### Vanlige uttrykk og setninger

altitude arc cutting Atlas axis base Bisect the angle called centre circumference cloth complete cone construct contained curve cutting cylinder describe a circle describe an arc describe arcs diagonal diameter distance divide draw a line draw lines Draw the line edge elevation ellipse equal equal in area equilateral triangle face four given circle given line given point given square ABCD given straight line given triangle ABC half height hexagon horizontal plane inches inclined inscribe intersection isosceles triangle Join length Maps mark meeting Method 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 semicircle sides similar solid straight line Take 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.