A course of practical geometry for mechanics1856 |
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Página 3
... extremities of a Line are Points . Lines are either Straight , Curved , or Mixed . 4 * . A Straight ( or Right ) Line is that which lies evenly between its extreme points . 5. A Curved Line continually changes its direction between its ...
... extremities of a Line are Points . Lines are either Straight , Curved , or Mixed . 4 * . A Straight ( or Right ) Line is that which lies evenly between its extreme points . 5. A Curved Line continually changes its direction between its ...
Página 5
... extremities of a superficies are lines . Superficies are either Plane , Concave , or Convex . 14 * . A Plane Superficies is that in which any two points being taken , the straight line between them lies wholly in that superficies ...
... extremities of a superficies are lines . Superficies are either Plane , Concave , or Convex . 14 * . A Plane Superficies is that in which any two points being taken , the straight line between them lies wholly in that superficies ...
Página 6
... extremity of any thing . 25 * . A Figure is that which is enclosed by one or more boundaries . 26. A Plane figure is that which is described upon a plane . 27 * . A Circle is a plane figure contained by one line , which is called the ...
... extremity of any thing . 25 * . A Figure is that which is enclosed by one or more boundaries . 26. A Plane figure is that which is described upon a plane . 27 * . A Circle is a plane figure contained by one line , which is called the ...
Página 7
... extremities of an arc . 34. A Sector is a part of a circle contained by an arc , and two radii drawn to its extremities . 35. A Segment is a part of a whole ; thus , if a right line be cut into two or more parts , each part is a segment ...
... extremities of an arc . 34. A Sector is a part of a circle contained by an arc , and two radii drawn to its extremities . 35. A Segment is a part of a whole ; thus , if a right line be cut into two or more parts , each part is a segment ...
Página 12
... extremities of the straight line , which is the base of the segment . 86. If two radii be drawn in a circle , the angle con- tained by them is called the angle at the Centre of the circle ; and if from the points where these radii meet ...
... extremities of the straight line , which is the base of the segment . 86. If two radii be drawn in a circle , the angle con- tained by them is called the angle at the Centre of the circle ; and if from the points where these radii meet ...
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Términos y frases comunes
13 inches A B C A C B Aldersgate Street altitude angle equal arc or angle Arithmetical mean Bisect Book centre circumference contain an angle cutting A B describe a circle describe a regular describe an arc diagonal scale distance Divide a line Draw a line Draw chords Draw the line ellipse equilateral triangle Euclid Euclid's Elements EXAMPLES French FRENCH LANGUAGE Geometry given angle given circle given line given parallelogram given point given square given straight line given triangle Harmonical mean heptagon inch side inches long inches radius inches respectively inscribe isosceles triangle Join Let A B line 2 inches line A B number of degrees number of equal parallel parallel ruler perpendicular plain scale plane Prob PROBLEM produced Prop protractor pupil radii rectangle rectilineal figure regular pentagon regular polygon Relfe rhombus right angles right line right-angled triangle scale of chords segment square equal triangle required vertex vertical angle
Pasajes populares
Página 8 - 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.
Página 8 - 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.
Página 7 - 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.
Página 68 - In any right-angled triangle, the square which is described upon the side subtending the right angle, is equal to the squares described upon the sides which contain the right angle.
Página 14 - An angle in a segment is the angle contained by two straight lines drawn from any point in the circumference of the segment to the extremities of the straight . line which is the base of the segment.
Página 9 - A diameter of a circle is a straight line drawn through the centre, and terminated both ways by the circumference.
Página 11 - Parallel straight lines are such as are in the same plane, and which being produced ever so far both ways, do not meet.
Página 7 - ... 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 contained by AB...