A course of practical geometry for mechanics1846 |
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Σελίδα 3
... called for in many respectable quarters , it is presumed that the efforts of the Author to satisfy the public have been successful . The work , originally , was designed as a class book for a very numerous , intelligent , and ...
... called for in many respectable quarters , it is presumed that the efforts of the Author to satisfy the public have been successful . The work , originally , was designed as a class book for a very numerous , intelligent , and ...
Σελίδα 6
... called Theo- retical , and Practical : the first comprises the principles of the science ; the second , their application . Books on theoretical geometry have proceeded from many authors , but not one is patronized more than Euclid's ...
... called Theo- retical , and Practical : the first comprises the principles of the science ; the second , their application . Books on theoretical geometry have proceeded from many authors , but not one is patronized more than Euclid's ...
Σελίδα 7
... called definitions . For example , if a pupil were asked " what is a line ? " it is ' probable the question would be proposed thus , " Define a line ; " and the proper reply to this demand would be , " A line is length without breadth ...
... called definitions . For example , if a pupil were asked " what is a line ? " it is ' probable the question would be proposed thus , " Define a line ; " and the proper reply to this demand would be , " A line is length without breadth ...
Σελίδα 9
... called the point of contact . When a tangent is mentioned simply , it means a straight line touching a curved line . 11. A Secant is a line which cuts a circle , lying partly within , and partly without it . 12 * . A Superficies is that ...
... called the point of contact . When a tangent is mentioned simply , it means a straight line touching a curved line . 11. A Secant is a line which cuts a circle , lying partly within , and partly without it . 12 * . A Superficies is that ...
Σελίδα 10
... DB , CB , is called the angle DBC , or CBD ; but , if there be only one angle at a point , it may be expressed by a letter placed ' at that point . ' Two adjoining angles , as ABE , ABC , having 10 PRACTICAL GEOMETRY .
... DB , CB , is called the angle DBC , or CBD ; but , if there be only one angle at a point , it may be expressed by a letter placed ' at that point . ' Two adjoining angles , as ABE , ABC , having 10 PRACTICAL GEOMETRY .
Άλλες εκδόσεις - Προβολή όλων
Συχνά εμφανιζόμενοι όροι και φράσεις
altitude angle to contain arc or angle arithmetic Arithmetical mean base called centre chords shall form circumference decagon describe a circle describe an arc describe arcs cutting describe the arc diagonals diameter dodecagon Draw a line Draw chords Draw the line ellipse equilateral triangle erect a perpendicular Euclid Euclid's Elements EXAMPLE extremities generatrix given angle given circle given figure given line given number given point given triangle inches long inscribe a regular isosceles triangle Join length Let A B line 2 inches lines A B number of degrees number of equal parallel parallel ruler parallelogram pentagon perpendicular plane point of intersection PROBLEM protractor radii radius ratio rectangle regular heptagon regular pentagon regular polygon rhombus right angles right-angled triangle scale scalene triangle sector segment square equal straight line Superficies tangent triangle ACB triangle required vertex vertical angle Vide Def Vide Prob WANOSTROCHT'S
Δημοφιλή αποσπάσματα
Σελίδα 11 - When a straight line standing on another straight line makes the adjacent angles equal to one another, each of the angles is called a right angle ; and the straight line which stands on the other is called a perpendicular to it.
Σελίδα 10 - 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 12 - A circle is a plane figure contained by one line, which is called the circumference, and is such that all straight lines drawn from a certain point within the figure to the circumference, are equal to one another.
Σελίδα 13 - A diameter of a circle is a straight line drawn through the centre, and terminated both ways by the circumference.
Σελίδα 10 - When several angles are at one point B, any one ' of them is expressed by three letters, of which the letter ' that is at the vertex of the angle, that is, at the point in ' which the straight lines that contain the angle meet one ' another, is put between the other two letters, and one of ' these two is somewhere upon one of those straight lines, ' and the other upon the other line : thus the angle which ' is contained by the straight lines AB, CB, is named the ' angle ABC, or CBA; that which is...
Σελίδα 17 - Parallel straight lines are such as are in the same plane, and which being produced ever so far both ways, do not meet.
Σελίδα 16 - A rhomboid is that which has its opposite sides equal to one another, but all its sides are not equal, nor its angles right angles.
Σελίδα 10 - A plane angle is the inclination of two lines to one another in a plane, which meet together, but are not in the same direction.
Σελίδα 16 - A Parallelogram is a four-sided figure, of which the opposite sides are parallel ; and the diameter is the straight line joining two of its opposite angles.
Σελίδα 13 - A Segment is any part of a circle bounded by an arc and its chord. 51. A Semicircle is half the circle, or a segment cut off by a diameter. The half circumference is sometimes called the Semicircle. 52. A...