First book of mathematicsA. & C. Black, 1872 - 124 sider |
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Resultat 1-5 av 8
Side 8
... stands upon the arc EA ; the angle ECB upon the arc EB ; the arc DB subtends the angle DCB . 43. Let a thread be ... stands is doubled in length ; when the angle is trebled , it stands on a arc of three times the number of degrees ; and ...
... stands upon the arc EA ; the angle ECB upon the arc EB ; the arc DB subtends the angle DCB . 43. Let a thread be ... stands is doubled in length ; when the angle is trebled , it stands on a arc of three times the number of degrees ; and ...
Side 9
... stands on it . 45. An angle is measured , therefore , by placing the vertex at the centre of a circle and measuring the num- ber of degrees in the arc on which it stands . It is said to be an angle of that number of degrees . If , in ...
... stands on it . 45. An angle is measured , therefore , by placing the vertex at the centre of a circle and measuring the num- ber of degrees in the arc on which it stands . It is said to be an angle of that number of degrees . If , in ...
Side 10
... 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 ( lengthening out ) one of its sides , so as to make two adjacent angles ...
... 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 ( lengthening out ) one of its sides , so as to make two adjacent angles ...
Side 22
... stand upon three equal arcs of 30 ° each . 85. Note . From B to 60 ° , along the arc , is two- thirds of 90 ° , or 60 ° ; and a straight line from B to 60 ° on the arc would be the chord of 60 ° . The distance from B to 60 ° was made ...
... stand upon three equal arcs of 30 ° each . 85. Note . From B to 60 ° , along the arc , is two- thirds of 90 ° , or 60 ° ; and a straight line from B to 60 ° on the arc would be the chord of 60 ° . The distance from B to 60 ° was made ...
Side 73
... stands for 8 , and b for 9 , then the value of a + b is 17. There may be several quantities , as a + b + c . The expression 4 + 7 = 3 + 8 , means that the sum of 4 and 7 is equal to the sum of 3 and 8. In like manner , we may have a + b ...
... stands for 8 , and b for 9 , then the value of a + b is 17. There may be several quantities , as a + b + c . The expression 4 + 7 = 3 + 8 , means that the sum of 4 and 7 is equal to the sum of 3 and 8. In like manner , we may have a + b ...
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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.