A course of practical geometry for mechanicsSimpkin and Marshall, 1843 - 68 sider |
Inni boken
Resultat 1-5 av 10
Side 15
... Altitude of any figure is the straight line drawn from its vertex perpendicular to the base . Vide Def . IV . Book VI . of Euclid . 43. The Vertex of an angle , is its angular point ; that is , the point where the legs of the angle meet ...
... Altitude of any figure is the straight line drawn from its vertex perpendicular to the base . Vide Def . IV . Book VI . of Euclid . 43. The Vertex of an angle , is its angular point ; that is , the point where the legs of the angle meet ...
Side 51
... altitudes , ) are equal to one another . " PROBLEM LX . To make an isosceles triangle equal to any scalene triangle ... altitude . For reason , vide Prob . LIX . and Prob . IV . Bk . I. Euclid . EXAMPLE . A right - angled triangle , as ...
... altitudes , ) are equal to one another . " PROBLEM LX . To make an isosceles triangle equal to any scalene triangle ... altitude . For reason , vide Prob . LIX . and Prob . IV . Bk . I. Euclid . EXAMPLE . A right - angled triangle , as ...
Side 52
... altitude . 1. Bisect AB by a perpendicular as HD produced . Let HC be equal to the given altitude . 2. Draw CA , CB ; and from the vertex D draw lines parallel to each , cutting A B in a b . A H 3. From a and b draw lines to C , 52 ...
... altitude . 1. Bisect AB by a perpendicular as HD produced . Let HC be equal to the given altitude . 2. Draw CA , CB ; and from the vertex D draw lines parallel to each , cutting A B in a b . A H 3. From a and b draw lines to C , 52 ...
Side 53
... altitude can be made equal to it . PROBLEM LXIV . Any right - angled triangle being given , to make another triangle of a greater altitude equal to it . 1. Let ACB be the given triangle . 2. Produce BC upwards , on which take a point P ...
... altitude can be made equal to it . PROBLEM LXIV . Any right - angled triangle being given , to make another triangle of a greater altitude equal to it . 1. Let ACB be the given triangle . 2. Produce BC upwards , on which take a point P ...
Side 58
... planes can be added together , but only equal planes can be multiplied . PROBLEM LXXVI . To make a triangle that shall be equal to any number of triangles . CASE I. When the triangles have equal altitudes . 1. 58 PRACTICAL GEOMETRY .
... planes can be added together , but only equal planes can be multiplied . PROBLEM LXXVI . To make a triangle that shall be equal to any number of triangles . CASE I. When the triangles have equal altitudes . 1. 58 PRACTICAL GEOMETRY .
Andre utgaver - Vis alle
Vanlige uttrykk og setninger
60 degrees altitude angle equal arc or angle Bisect called centre chords shall form circumference curvilineal cutting A B decagon describe a circle describe a regular describe an arc describe arcs cutting diagonals diameter dodecagon Draw a line Draw chords draw lines Draw the line ellipse equilateral triangle Euclid Euclid's Elements EXAMPLE generatrix geometry given angle given circle given line given point given right line given triangle gonals heptagon inches long inscribe isosceles triangle Join length Let A B line 2 inches line A B line parallel LVIII number of degrees number of equal parallel ruler parallelogram pentagon perpendicular plane point of intersection protractor radii radius ratio rectangle regular nonagon regular polygon rhombus right angles right-angled triangle segment square equal straight line superficies tangent trapezium triangle being given triangle equal triangle required vertex vertical angle Vide Def vide Prob
Populære avsnitt
Side 8 - 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.
Side 10 - A diameter of a circle is a straight line drawn through the centre, and terminated both ways by the circumference.
Side 9 - CHG; and they are adjacent angles; but when a straight line standing on another straight line makes the adjacent angles equal to one another...
Side 9 - 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.
Side 13 - Of four-sided figures, a SQUARE is that which has all its sides equal, and all its angles right angles.
Side 9 - 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.
Side 14 - Parallel straight lines are such as are in the same plane, and which being produced ever so far both ways, do not meet.
Side 8 - 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.
Side 13 - 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.
Side 8 - DBC, or CBD ; but, if there be only one angle at a point, it may be expressed by a letter placed at that point ; as the angle at E.