## Popular Mathematics: Being the First Elements of Arithmetic, Algebra, and Geometry, in Their Relations and Uses |

### From inside the book

Results 1-5 of 21

Page 176

...

...

**round**a central line , like the thread of a screw . In fact , there is an endless variety of curved lines , or ...**space**be inclosed by , or situated between , two straight lines which meet each other at any two points . As a ... Page 231

...

...

**space**marked out by a plane**round**any point extends equally in all directions , the best representation which we can have for it is a**circle**, as , for instance , the**circle**of which the centre is the point a . .A It will be recollected ... Page 232

...

...

**SPACE**. picture to itself . When , however , we refer to the**circle**in one position as a plane we can consider it as including plane sur- faces only , and as including those only which are situated in the same plane with the**circle**... Page 233

...

...

**round**a , to preserve that line , and be at the same time turned either to the right hand or to the left . But it is ...**space**through which it is supposed to be indefinitely drawn ; and that if we take any**circle**, as , for ... Page 234

... circle , they divide all

... circle , they divide all

**space round**that point , and in the plane of that circle , in exactly the same proportion or ratio . If they con- tain half the circle , in which case they are in the same straight line passing through the ...### Other editions - View all

Popular Mathematics: Being the First Elements of Arithmetic, Algebra, and ... Robert Mudie No preview available - 2017 |

### Common terms and phrases

adjacent angles Algebra angular space answering apply bisects breadth called centre circle circumference co-efficients compound quantity consequently considered consists contain cube root decimal point denominator diameter difference direction divide dividend division divisor drawn equi-multiples Euclid's Elements evident exactly equal exponent expressed factors follows four fraction geometrical geometrical series greater hypotenuse inclination instance integer number interior angles kind least common multiple length less letters logarithm magnitude mathematical means measure meet metical multiplicand multiplier natural numbers necessary number of figures obtained operation opposite parallel parallelogram performed perpendicular plane position principle proportion quan quotient radius ratio reciprocal rectangle relation remaining right angles round a point salient angle scale of numbers second term segment sides simple solid space round square root stand straight line subtraction surface taken third tion triangle truth whole

### Popular passages

Page 396 - Upon a given straight line to describe a segment of a circle, which shall contain aa angle equal to a given rectilineal angle.

Page 473 - Prove it. 6.If a straight line be bisected and produced to any point, the rectangle contained by the whole line thus produced, and the part of it produced together with the -square on half the line bisected, is equal to the square on the straight line which is made up of the half and the part produced.

Page 416 - If two triangles have two sides, and the included angle of the one equal to two sides and the included angle of the other, each to each, the two triangles are equal in all respects.

Page 380 - If two angles of a triangle are equal, the sides opposite those angles are equal. AA . . A Given the triangle ABC, in which angle B equals angle C. To prove that AB = A C. Proof. 1. Construct the AA'B'C' congruent to A ABC, by making B'C' = BC, Zfi' = ZB, and Z C

Page 494 - IF from any point without a circle two straight lines be drawn, one of which cuts the circle, and the other touches it ; the rectangle contained by the whole line which cuts the circle, and the part of it without the circle, shall be equal to the square of the line which touches it.

Page 138 - Generalising this operation, we have the common rule for finding the greatest common measure of any two numbers : — divide the greater by the less, and the divisor by the remainder continually till nothing remains, and the last divisor is the greatest common measure.

Page 259 - Angles, taken together, is equal to Twice as many Right Angles, wanting four, as the Figure has Sides.

Page 489 - But let one of them BD pass through the centre, and cut the other AC, which does not pass through the centre, at right angles, in the...

Page 102 - COR. 1. Hence, because AD is the sum, and AC the difference of ' the lines AB and BC, four times the rectangle contained by any two lines, together with the square of their difference, is equal to the square ' of the sum of the lines." " COR. 2. From the demonstration it is manifest, that since the square ' of CD is quadruple of the square of CB, the square of any line is qua' druple of the square of half that line.