Plane and solid geometry, by G.E. Webster and A. Gardiner |
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Resultat 1-5 av 36
Side 7
... meet together , but do not form the same straight line . 4. When a straight line standing on another straight line makes the adjacent angles equal to one another , this line is said to be at right angles to the line on which it stands ...
... meet together , but do not form the same straight line . 4. When a straight line standing on another straight line makes the adjacent angles equal to one another , this line is said to be at right angles to the line on which it stands ...
Side 9
... meets A B , and same radius , cut are in d . With centre d and same radius , cut arc c in e . From centres d and e , describe arc cutting in f . Join f A. Af is the perpendicular required . FIG . 5. - SECOND METHOD . From the extremity ...
... meets A B , and same radius , cut are in d . With centre d and same radius , cut arc c in e . From centres d and e , describe arc cutting in f . Join f A. Af is the perpendicular required . FIG . 5. - SECOND METHOD . From the extremity ...
Side 10
... meets the arc B A D in the point D. Join D A. Then D A is the perpendicular required . FIG . 7 . To draw a perpendicular to a given line A B , from a point C above the centre of the given line . With centre C , and any convenient radius ...
... meets the arc B A D in the point D. Join D A. Then D A is the perpendicular required . FIG . 7 . To draw a perpendicular to a given line A B , from a point C above the centre of the given line . With centre C , and any convenient radius ...
Side 11
... meets B C. Then the angle D B ' C is the required angle equal to the angle A. FIG . 13 . To divide a given line A B into any number of equal parts ( suppose 5 ) . At the point A draw A C of indefinite length , making any angle with A B ...
... meets B C. Then the angle D B ' C is the required angle equal to the angle A. FIG . 13 . To divide a given line A B into any number of equal parts ( suppose 5 ) . At the point A draw A C of indefinite length , making any angle with A B ...
Side 12
... meet at C. Then the figure A B C D will be the square required . FIG . 17 . To construct an equilateral triangle on a given line A B. With centres A , B , and a radius equal to the line A B , describe arcs cutting at D. Join A D B. The ...
... meet at C. Then the figure A B C D will be the square required . FIG . 17 . To construct an equilateral triangle on a given line A B. With centres A , B , and a radius equal to the line A B , describe arcs cutting at D. Join A D B. The ...
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Plane and Solid Geometry, by G.E. Webster and A. Gardiner George E. Webster,Alfonzo Gardiner Ingen forhåndsvisning tilgjengelig - 2015 |
Plane and Solid Geometry, by G.E. Webster and A. Gardiner George E. Webster,Alfonzo Gardiner Ingen forhåndsvisning tilgjengelig - 2018 |
Vanlige uttrykk og setninger
altitude angle of 30 apex axis centre co-ordinate planes cone Copy-Books D E parallel describe arc cutting describe circle describe semicircle determine the plan dihedral angle distance divide division draw a b draw lines parallel Draw the plan drop a perpendicular English Grammar equilateral triangle erect a perpendicular F'cap 8vo Geometry given angle given line A B given point given triangle hexagonal hexagonal pyramid horizontal plane horizontal trace inches inclined at 50 Join a b last problem lines drawn mean proportional nonagon number of equal octahedron parallel to X Y parallelogram pentagon pentagonal pyramid perpendicular to X Y plan and elevation plane inclined planes of projection point of intersection Produce a b pyramid regular polygon required line revolved rhombus right angles right-angled triangle sides straight line student tangent tetrahedron triangle A B C true length vertical plane vertical trace
Populære avsnitt
Side 22 - ... similar rectilineal figures are to one another in the duplicate ratio of their homologous sides.
Side 44 - A cone is a solid figure described by the revolution of a right-angled triangle about one of the sides containing the right angle, which side remains fixed. If the fixed side be equal to the other side containing the right angle, the cone is called a right-angled cone ; if it be less than the other side, an obtuse-angled ; and if greater, an acute-angled cone.
Side 7 - 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 67 - EXERCISES. 1. Draw a line inclined at 30° and making an angle of 45° with the vertical plane ; and a plane inclined at 50° and making an angle of 65° with the vertical plane, to contain the line. 2. The horizontal trace of a plane makes an angle of 30° with the ground line ; draw the vertical trace on the supposition that the two traces really contain an angle of 65° ; thence determine the angles which this plane makes with both planes of projection.
Side 8 - A rhombus, is that which has all its sides equal, but its angles are not right angles.
Side 44 - A parallelepiped is a solid figure contained by six quadrilateral figures, whereof every opposite two are parallel.