A course of practical geometry for mechanics1846 |
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Página 14
... triangle , the second a quadrangle , and the third a multangle . Triangles are either plane or spherical . 46. A ... equal sides . Its three angles are also equal to one another , and each contains 60 degrees . The three angles of any ...
... triangle , the second a quadrangle , and the third a multangle . Triangles are either plane or spherical . 46. A ... equal sides . Its three angles are also equal to one another , and each contains 60 degrees . The three angles of any ...
Página 15
W. PEASE. Two of its angles are equal , namely , those opposite to the equal sides . 50 * . A Scalene Triangle is that which has three unequal sides . All its angles are unequal . 51 * . A Right - angled Triangle is that which has a ...
W. PEASE. Two of its angles are equal , namely , those opposite to the equal sides . 50 * . A Scalene Triangle is that which has three unequal sides . All its angles are unequal . 51 * . A Right - angled Triangle is that which has a ...
Página 20
... equal . 88. An Ellipse is a section of a cone cut by a plane obliquely to its axis . 89. The Ellipse has two ... triangle be inscribed in a circle , either of its angles is In one segment , and stands On the other segment by which the ...
... equal . 88. An Ellipse is a section of a cone cut by a plane obliquely to its axis . 89. The Ellipse has two ... triangle be inscribed in a circle , either of its angles is In one segment , and stands On the other segment by which the ...
Página 21
... triangle whose area is three square inches , is equal to the sum of two other triangles , whose areas square inch ... equal to the said measure . 100. To Transform a figure , is to change it into another figure of the same superficial or ...
... triangle whose area is three square inches , is equal to the sum of two other triangles , whose areas square inch ... equal to the said measure . 100. To Transform a figure , is to change it into another figure of the same superficial or ...
Página 23
... equal parts , called seconds ; and these also into sixty equal parts ... Triangle and Ruler , " made by a good carpenter , answer all the purposes of ... equal , clear , and of uniform thickness ; for to draw a good line is a great desi ...
... equal parts , called seconds ; and these also into sixty equal parts ... Triangle and Ruler , " made by a good carpenter , answer all the purposes of ... equal , clear , and of uniform thickness ; for to draw a good line is a great desi ...
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Términos y frases comunes
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
Pasajes populares
Página 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.
Página 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.
Página 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.
Página 13 - A diameter of a circle is a straight line drawn through the centre, and terminated both ways by the circumference.
Página 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...
Página 17 - Parallel straight lines are such as are in the same plane, and which being produced ever so far both ways, do not meet.
Página 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.
Página 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.
Página 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.
Página 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...