A course of practical geometry for mechanics1856 |
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Página
... Chord , diameter , radius , secant Circle , circumference , circumscribe Common , complement , supplement . Definitions . Degrees Describe , draw , drawing Diameter , diagonal .... Division , of lines , of figures Ellipse , oval ...
... Chord , diameter , radius , secant Circle , circumference , circumscribe Common , complement , supplement . Definitions . Degrees Describe , draw , drawing Diameter , diagonal .... Division , of lines , of figures Ellipse , oval ...
Página 7
... Chord is a right line joining the 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 ...
... Chord is a right line joining the 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 ...
Página 11
... chord is the subtense of an arc : each of the three angles of a triangle also may be said to be subtended by the side opposite to it . 73. The Vertex of an angle is its angular point ; that is , the point where the legs of the angle ...
... chord is the subtense of an arc : each of the three angles of a triangle also may be said to be subtended by the side opposite to it . 73. The Vertex of an angle is its angular point ; that is , the point where the legs of the angle ...
Página 18
... chords as the 60 degrees were , with which the arc F G , was described . The angles GAB and ECD in Prob . II . contain 25 degrees each . By means of the scale of chords , the number of degrees in a given angle may be ascertained . Let ...
... chords as the 60 degrees were , with which the arc F G , was described . The angles GAB and ECD in Prob . II . contain 25 degrees each . By means of the scale of chords , the number of degrees in a given angle may be ascertained . Let ...
Página 20
... Chords . 4. Make contiguous angles of 15 ° , 20 ° , 25o , 30 ° , and show , by the scale of chords , that the total forms a right angle . PROBLEM V. From a given point to draw a right line that shall be parallel to a given right line ...
... Chords . 4. Make contiguous angles of 15 ° , 20 ° , 25o , 30 ° , and show , by the scale of chords , that the total forms a right angle . PROBLEM V. From a given point to draw a right line that shall be parallel to a given right line ...
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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...