First book of mathematicsA. & C. Black, 1872 - 124 σελίδες |
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Αποτελέσματα 1 - 5 από τα 19.
Σελίδα 5
... meets the circumference in only one point , all the rest of it being outside of the circle . It is said to touch the circle . 33. When the radius of one circle is equal to the radius of another circle , the two circles are equal in all ...
... meets the circumference in only one point , all the rest of it being outside of the circle . It is said to touch the circle . 33. When the radius of one circle is equal to the radius of another circle , the two circles are equal in all ...
Σελίδα 14
... meet . Note . It is plain that using radii differing in length , there may be found a great number of points in a plane , each equidistant from A and B. TO BISECT AN ANGLE . 15 Problem 4 . 65. 14 FIRST BOOK OF MATHEMATICS .
... meet . Note . It is plain that using radii differing in length , there may be found a great number of points in a plane , each equidistant from A and B. TO BISECT AN ANGLE . 15 Problem 4 . 65. 14 FIRST BOOK OF MATHEMATICS .
Σελίδα 16
... meets AB ; but it is best as in the figure . Note 1. - Observe that CD is at right angles to AB . Note 2. - Observe that if CA and CB were joined , the pro- blem is very similar to the last one , and the angle АСВ would be bisected by ...
... meets AB ; but it is best as in the figure . Note 1. - Observe that CD is at right angles to AB . Note 2. - Observe that if CA and CB were joined , the pro- blem is very similar to the last one , and the angle АСВ would be bisected by ...
Σελίδα 17
... meets the arc in F ( or till the produced part DF is equal to ED ) . Join FC . FC is the perpendicular required . 72. Note 1. - This illustrates a curious and important property of the circle . EF is manifestly a diameter of B the ...
... meets the arc in F ( or till the produced part DF is equal to ED ) . Join FC . FC is the perpendicular required . 72. Note 1. - This illustrates a curious and important property of the circle . EF is manifestly a diameter of B the ...
Σελίδα 34
... side of the line , make an angle equal to the other given angle . The sides of these angles , when produced , will meet and form the required triangle . RIGHT - ANGLED TRIANGLE . 35 129. Note 1. - 34 FIRST BOOK OF MATHEMATICS .
... side of the line , make an angle equal to the other given angle . The sides of these angles , when produced , will meet and form the required triangle . RIGHT - ANGLED TRIANGLE . 35 129. Note 1. - 34 FIRST BOOK OF MATHEMATICS .
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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
Δημοφιλή αποσπάσματα
Σελίδα 5 - The circumference of every circle is supposed to be divided into...
Σελίδα 48 - UPON a given straight line to describe a segment of a circle containing an angle equal to a given rectilineal angle.
Σελίδα 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.
Σελίδα 39 - Parallelograms on the same base, and between the same parallels, are equal to one another.
Σελίδα 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.
Σελίδα 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.
Σελίδα 118 - Divide the area by . 7854 and extract the square root of the quotient.
Σελίδα 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.
Σελίδα 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.
Σελίδα 4 - It is a line every point of which is at the same distance from a point within it called the centre.