A course of practical geometry for mechanics1856 |
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Αποτελέσματα 1 - 5 από τα 16.
Σελίδα 8
... triangle are together equal to two right angles , or 180 degrees . 44 * . Of three - sided figures , an Equilateral ... Isosceles Triangle is that which has only two sides equal . Two of its angles are equal , namely , those oppo- site ...
... triangle are together equal to two right angles , or 180 degrees . 44 * . Of three - sided figures , an Equilateral ... Isosceles Triangle is that which has only two sides equal . Two of its angles are equal , namely , those oppo- site ...
Σελίδα 22
... isosceles ; and the last two , equilateral triangles . It is an established geometrical truth , that any two sides of a triangle are greater than the third ; consequently , whenever this condition with regard to the dimensions of the ...
... isosceles ; and the last two , equilateral triangles . It is an established geometrical truth , that any two sides of a triangle are greater than the third ; consequently , whenever this condition with regard to the dimensions of the ...
Σελίδα 39
... isosceles triangle , that shall have a given vertical angle . Let A B be the given base . 1. Produce A B either way ... triangle required . EXAMPLES . 1. On a line 2 inches long , describe an isosceles triangle , with its vertical angle ...
... isosceles triangle , that shall have a given vertical angle . Let A B be the given base . 1. Produce A B either way ... triangle required . EXAMPLES . 1. On a line 2 inches long , describe an isosceles triangle , with its vertical angle ...
Σελίδα 40
... isosceles triangle being given , to describe another on the same base , whose vertical angle shall be half that of the given triangle . Let ADB ( see last Fig . ) be the isosceles triangle , of which A D B is the vertical angle given ...
... isosceles triangle being given , to describe another on the same base , whose vertical angle shall be half that of the given triangle . Let ADB ( see last Fig . ) be the isosceles triangle , of which A D B is the vertical angle given ...
Σελίδα 42
... isosceles triangle on the given straight line , having its vertical angle equal to the angle at the centre of the polygon , as AEB , ( see Fig . to Prob . XXXIV . ) From the vertex E as a centre , with the radius EA , describe a circle ...
... isosceles triangle on the given straight line , having its vertical angle equal to the angle at the centre of the polygon , as AEB , ( see Fig . to Prob . XXXIV . ) From the vertex E as a centre , with the radius EA , describe a circle ...
Άλλες εκδόσεις - Προβολή όλων
Συχνά εμφανιζόμενοι όροι και φράσεις
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
Δημοφιλή αποσπάσματα
Σελίδα 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.
Σελίδα 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.
Σελίδα 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.
Σελίδα 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.
Σελίδα 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.
Σελίδα 9 - A diameter of a circle is a straight line drawn through the centre, and terminated both ways by the circumference.
Σελίδα 11 - Parallel straight lines are such as are in the same plane, and which being produced ever so far both ways, do not meet.
Σελίδα 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...