First book of mathematicsA. & C. Black, 1872 - 124 sider |
Inni boken
Resultat 1-5 av 22
Side 12
... expression , " Join AB , " is generally used to signify , " Draw a straight line between the points A and B. " 59. Note . - Any two points in a straight line are sufficient to determine its position . Problem 2 . 60. To draw a circle ...
... expression , " Join AB , " is generally used to signify , " Draw a straight line between the points A and B. " 59. Note . - Any two points in a straight line are sufficient to determine its position . Problem 2 . 60. To draw a circle ...
Side 18
... expressed , the angle in a semicircle ( 30 ) is a right angle . 73. Second method . - From C , with any radius , CD , FIG . 14 E B D describe the arc DEG , cutting the line AB in D. From D , with the same radius , cut the arc in E , and ...
... expressed , the angle in a semicircle ( 30 ) is a right angle . 73. Second method . - From C , with any radius , CD , FIG . 14 E B D describe the arc DEG , cutting the line AB in D. From D , with the same radius , cut the arc in E , and ...
Side 23
... BA fully divided , each part of it , reckoning from B , would be the chord of the degrees marked at the end of the part . The scale of chords is very useful for the construction of angles of any required magnitude expressed in de- grees.
... BA fully divided , each part of it , reckoning from B , would be the chord of the degrees marked at the end of the part . The scale of chords is very useful for the construction of angles of any required magnitude expressed in de- grees.
Side 24
Hugo Reid. of angles of any required magnitude expressed in de- grees . Such a scale is to be found on the flat rulers sold by mathematical instrument makers . Problem 11 . 87. At a point in a given line to make an angle of any given ...
Hugo Reid. of angles of any required magnitude expressed in de- grees . Such a scale is to be found on the flat rulers sold by mathematical instrument makers . Problem 11 . 87. At a point in a given line to make an angle of any given ...
Side 29
... expressed shortly EH2 , or EF2 . F FIG . 27 H In The square is a figure of great use in geometry . mensuration it is taken as the unit of measure for expressing the areas of figures . III . A RECTANGLE ( or oblong ) is a parallelogram ...
... expressed shortly EH2 , or EF2 . F FIG . 27 H In The square is a figure of great use in geometry . mensuration it is taken as the unit of measure for expressing the areas of figures . III . A RECTANGLE ( or oblong ) is a parallelogram ...
Andre utgaver - Vis alle
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.