First book of mathematicsA. & C. Black, 1872 - 124 sider |
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Side 1
... draw any line entirely without breadth . But we may reason about them as if they had no breadth . Also , the edges of the leaf may be straight or curved . A 3. But the book has more than length and breadth . It has also thickness or ...
... draw any line entirely without breadth . But we may reason about them as if they had no breadth . Also , the edges of the leaf may be straight or curved . A 3. But the book has more than length and breadth . It has also thickness or ...
Side 2
... the straight line between them . Only one straight line can be drawn between two points . 12. The word rectilineal , means " straight - lined . " ELEMENTARY DEFINITIONS . 3 13. A CURVED LINE , or 2 FIRST BOOK OF MATHEMATICS .
... the straight line between them . Only one straight line can be drawn between two points . 12. The word rectilineal , means " straight - lined . " ELEMENTARY DEFINITIONS . 3 13. A CURVED LINE , or 2 FIRST BOOK OF MATHEMATICS .
Side 3
... drawn , coinciding with them at every point , as a cylinder or a cone . But this cannot be done between two points anywhere , only at particular · parts . 17. A SOLID is that which has the three dimensions , length , breadth , and depth ...
... drawn , coinciding with them at every point , as a cylinder or a cone . But this cannot be done between two points anywhere , only at particular · parts . 17. A SOLID is that which has the three dimensions , length , breadth , and depth ...
Side 10
... drawn with its centre at B , the angles at B would be found each to stand upon one - fourth of the circumference . When there is only one angle , as E , fig . 4 , p . 6 , if it is a right angle , this will be best seen by producing ...
... drawn with its centre at B , the angles at B would be found each to stand upon one - fourth of the circumference . When there is only one angle , as E , fig . 4 , p . 6 , if it is a right angle , this will be best seen by producing ...
Side 11
... drawn perpendicular to the other , these perpendiculars shall all be equal to each other . A FIG . 8 B D The straight lines , AB , CD , are parallel to each other , or , shortly , parallel . Parallel lines continue at the same distance ...
... drawn perpendicular to the other , these perpendiculars shall all be equal to each other . A FIG . 8 B D The straight lines , AB , CD , are parallel to each other , or , shortly , parallel . Parallel lines continue at the same distance ...
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Vanlige uttrykk og setninger
ABCD acres acute angle added altitude angle equal angular points base Bisect called centre chord circle circumference construct contained denotes diagonal diameter difference distance divide divisor draw drawn edge ends equal equal angles equation equidistant Examples Exercises expressed extract feet field figure Find the area foot formula four geometrical given angle given line given point given straight line given triangle gives half hypotenuse inches inscribed Join known length less letters mark means measure meet multiply Note number of degrees opposite side parallel parallel lines parallelogram perpendicular placed plane poles preceding Problem produced proportion quadrilateral quantity radius ratio rectangle regular polygon respects right angles right-angled triangle rood round rule sides similar square square root stands straight line subtracted surface taken term third usually whole yards
Populære avsnitt
Side 7 - The circumference of every circle is supposed to be divided into...
Side 50 - UPON a given straight line to describe a segment of a circle containing an angle equal to a given rectilineal angle.
Side 5 - A plane rectilineal angle is the inclination of two straight lines to one another, which meet together, but are not in the same straight line.
Side 41 - Parallelograms on the same base, and between the same parallels, are equal to one another.
Side 61 - Quadrilateral ; of five sides a Pentagon ; of six sides a Hexagon ; of seven sides a Heptagon ; of eight sides an Octagon ; of nine sides a Nonagon ; of ten sides a Decagon ; of twelve sides a Dodecagon.
Side 114 - Polygons are those which have more than four sides. They receive particular names from the number of their sides ; thus a pentagon has five sides, a hexagon has six sides, a heptagon seven, an octagon eight, a nonagon nine, a decagon ten, an undecagon eleven, and a dodecagon has twelve sides.
Side 120 - Divide the area by . 7854 and extract the square root of the quotient.
Side 84 - To rearrange an equation you can • add the same quantity to both sides • subtract the same quantity from both sides • multiply both sides by the same quantity • divide both sides by the same quantity.
Side 109 - Find the area of a field in the form of a trapezoid whose altitude is 120 m and whose parallel sides are 130 m and 180 m.
Side 6 - It is a line every point of which is at the same distance from a point within it called the centre.