First book of mathematicsA. & C. Black, 1872 - 124 sider |
Inni boken
Resultat 1-5 av 9
Side 2
... placed close to it . 9. A line is that which has length without breadth . A line is named by letters placed at its ends . The ends of a line are points , and the intersec- tion ( crossing ) of one line with another is also a point . 10 ...
... placed close to it . 9. A line is that which has length without breadth . A line is named by letters placed at its ends . The ends of a line are points , and the intersec- tion ( crossing ) of one line with another is also a point . 10 ...
Side 12
... placed as close as possible to both points , and a finely - pointed pencil is then drawn from point to point , touching both the edge and the surface on which the line is required . It is well to test the straightness of the edge em ...
... placed as close as possible to both points , and a finely - pointed pencil is then drawn from point to point , touching both the edge and the surface on which the line is required . It is well to test the straightness of the edge em ...
Side 45
... placed in one straight line AC . Bisect AC in the point D , and from the centre D , with the radius AD , on AC describe a semicircle . At B draw BE at right angles to AC , meeting the arc in E. The square of BE is equal to 1 D B the ...
... placed in one straight line AC . Bisect AC in the point D , and from the centre D , with the radius AD , on AC describe a semicircle . At B draw BE at right angles to AC , meeting the arc in E. The square of BE is equal to 1 D B the ...
Side 72
... placed are exactly equal to one another . * Such expressions are extremely convenient . Their use would greatly simplify arithmetical language and explanations . We use th and times freely with numbers ; they can be used also advan ...
... placed are exactly equal to one another . * Such expressions are extremely convenient . Their use would greatly simplify arithmetical language and explanations . We use th and times freely with numbers ; they can be used also advan ...
Side 73
... placed is to be subtracted . - Examples . The expression 11-4 , means that 4 is to be subtracted from 11 , and is equivalent to 7 , the difference of these two numbers . The expression a − b , denotes that b is to be subtracted from a ...
... placed is to be subtracted . - Examples . The expression 11-4 , means that 4 is to be subtracted from 11 , and is equivalent to 7 , the difference of these two numbers . The expression a − b , denotes that b is to be subtracted from a ...
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Vanlige uttrykk og setninger
20 feet ABCD acute angle adjacent angles adjacent sides algebra altitude angle equal angular points Ans.-1 acre arc cutting called central angle centre circumference contained denotes describe an arc diagonal divide divisor drawn equal angles equal sides equation equidistant equilateral triangle expressed extract the square ference Find the area Find the length foot formula geometrical truth given angle given line given point given square given straight line given triangle gonal hexagon hypotenuse inches inscribed line joining meet middle point multiply Nonagon Note number of degrees number of sides opposite angles opposite side parallel lines parallelogram pendicular perpendicular plane figure point of bisection poles produced proportion quadrilateral radius equal ratio rectangle rectilineal figure regular polygon rhombus right angles right-angled triangle rood rule sides equal square equal square feet square root square yards subtracted surface tangent trapezium trapezoid unknown quantity
Populære avsnitt
Side 5 - The circumference of every circle is supposed to be divided into...
Side 48 - UPON a given straight line to describe a segment of a circle containing an angle equal to a given rectilineal angle.
Side 3 - 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 39 - Parallelograms on the same base, and between the same parallels, are equal to one another.
Side 59 - 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 112 - 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 118 - Divide the area by . 7854 and extract the square root of the quotient.
Side 82 - 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 107 - 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 4 - It is a line every point of which is at the same distance from a point within it called the centre.