A course of practical geometry for mechanics1856 |
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Página 2
... meet with difficulty , it may stimulate his efforts when told , that anything in science acquired through perseverance , will amply recompense him for all his toil . DEFINITIONS . IN every branch of science things occur which 2 ...
... meet with difficulty , it may stimulate his efforts when told , that anything in science acquired through perseverance , will amply recompense him for all his toil . DEFINITIONS . IN every branch of science things occur which 2 ...
Página 5
... meet together , but are not in the same direction . Plane Angles are either Rectilineal , Curvilineal , or Mix- tilineal . 18 * . A Plane Rectilineal Angle is the inclination of two straight lines to one another , which meet together ...
... meet together , but are not in the same direction . Plane Angles are either Rectilineal , Curvilineal , or Mix- tilineal . 18 * . A Plane Rectilineal Angle is the inclination of two straight lines to one another , which meet together ...
Página 9
... meet . 9 ク 56 * . 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 . Vide Prop . XXXIV . Book I. of Euclid . 57 * . A ...
... meet . 9 ク 56 * . 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 . Vide Prop . XXXIV . Book I. of Euclid . 57 * . A ...
Página 11
... meet . That of a figure , the uppermost angular point above the base . 74. The Altitude of any figure is the straight line drawn from its vertex perpendicular to the base . 75. When two lines cross each other , the opposite angles they ...
... meet . That of a figure , the uppermost angular point above the base . 74. The Altitude of any figure is the straight line drawn from its vertex perpendicular to the base . 75. When two lines cross each other , the opposite angles they ...
Página 12
... meet the circumference , two lines be drawn to any other point in the circumference , the angle contained by them is called the angle at the Circumference ; and this angle is exactly half of the angle at the centre . 87. The Sum of ...
... meet the circumference , two lines be drawn to any other point in the circumference , the angle contained by them is called the angle at the Circumference ; and this angle is exactly half of the angle at the centre . 87. The Sum of ...
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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...