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

### Inni boken

Resultat 1-5 av 19

Side 21

An

scalene triangle is that which has three unequal sides . E . c . ABCNOTE . — The

above terms have reference to the sides of the triangle . 7 . A right - angled

triangle ...

An

**isosceles triangle**is that which has only two sides equal . Ex . ABCBT 6 . Ascalene triangle is that which has three unequal sides . E . c . ABCNOTE . — The

above terms have reference to the sides of the triangle . 7 . A right - angled

triangle ...

Side 22

The vertex ( plural vertices ) of a triangle is its highest angle . Ex . A NOTE . — It is

also called the apex , or the vertical angle . 11 . The base of a triangle is

generally its lowest side . Ex . ABNOTE . — Both in an

right ...

The vertex ( plural vertices ) of a triangle is its highest angle . Ex . A NOTE . — It is

also called the apex , or the vertical angle . 11 . The base of a triangle is

generally its lowest side . Ex . ABNOTE . — Both in an

**isosceles triangle**and in aright ...

Side 29

To construct an

vertical angle C . 1 . From the angular point C as centre , and with any radius , cut

the sides of the angle in D and E , and join DE . 2 . At points A and B , make

angles ...

To construct an

**isosceles triangle**on a given base AB , and having a givenvertical angle C . 1 . From the angular point C as centre , and with any radius , cut

the sides of the angle in D and E , and join DE . 2 . At points A and B , make

angles ...

Side 30

Produce the lines forming the angles to meet in F , and FAB will be the required

base AB and its altitude CD given . 1 . Bisect the base AB in E ( Pr . 1 ) , and from

the ...

Produce the lines forming the angles to meet in F , and FAB will be the required

**isosceles triangle**. Problem 29 . To construct an**isosceles triangle**having itsbase AB and its altitude CD given . 1 . Bisect the base AB in E ( Pr . 1 ) , and from

the ...

Side 31

Then ABC will be the

ACB of 90° . Problem 31 . To construct an

its vertical angle containing a given required number of degrees ( say in this case

...

Then ABC will be the

**isosceles triangle**required , and having its vertical angleACB of 90° . Problem 31 . To construct an

**isosceles triangle**on a given base AB ,its vertical angle containing a given required number of degrees ( say in this case

...

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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.