Library of Useful Knowledge: Geometry plane, solid, and spherical [by Pierce Morton] 1830. Elements of trigonometry, by W. Hopkins. 1833. Elements of spherical trigonometry, by A. De Morgan. A treatise on algebraical geometry, by S.W. Waud. 1835Baldwin & Craddock, 1835 |
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Side 24
... edge which is a right line , or nearly so , ( because it is the common section of two planes , see Book IV . ) may be obtained by doubling over a piece of paper upon itself , and a right angle ( def . 10. ) by doubling over this edge ...
... edge which is a right line , or nearly so , ( because it is the common section of two planes , see Book IV . ) may be obtained by doubling over a piece of paper upon itself , and a right angle ( def . 10. ) by doubling over this edge ...
Side 25
... edge of the paper . PROP . 45. Prob . 4. ( Euc . i . 12. ) To draw a straight line at right angles to a given straight line AB , from a given point C without it . First method . Take any point D upon the other side of AB , and join CD ...
... edge of the paper . PROP . 45. Prob . 4. ( Euc . i . 12. ) To draw a straight line at right angles to a given straight line AB , from a given point C without it . First method . Take any point D upon the other side of AB , and join CD ...
Side 126
... edges . A A 8. A polyhedron is a solid figure in cluded by any number of planes , which are called its faces : if it have four faces only , which is the least number possi- ble , it is called a tetrahedron ; if six , a hexahedron ; if ...
... edges . A A 8. A polyhedron is a solid figure in cluded by any number of planes , which are called its faces : if it have four faces only , which is the least number possi- ble , it is called a tetrahedron ; if six , a hexahedron ; if ...
Side 127
... edges of the prism : the polygons are called bases ; the pa- rallelograms , sides ; and the surfaces of the parallelograms together constitute what is called the lateral or convex sur- face of the prism . The altitude of a prism is the ...
... edges of the prism : the polygons are called bases ; the pa- rallelograms , sides ; and the surfaces of the parallelograms together constitute what is called the lateral or convex sur- face of the prism . The altitude of a prism is the ...
Side 137
... edges of the solid angle be cut , by any the same plane , in the points B , C , D , E , F respectively , and therefore the planes which contain it in the straight lines BC , CD , DE , E F , FB ( 2. ) , which together contain the ...
... edges of the solid angle be cut , by any the same plane , in the points B , C , D , E , F respectively , and therefore the planes which contain it in the straight lines BC , CD , DE , E F , FB ( 2. ) , which together contain the ...
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Library of Useful Knowledge: Geometry plane, solid, and spherical [by Pierce ... Uten tilgangsbegrensning - 1835 |
Vanlige uttrykk og setninger
A B C ABCD adjacent angles altitude apothem base BC bisect centre chord circum circumference circumscribed coincide common measure common section compounded cone conic section contained convex surface cylinder describe a circle diameter dihedral angle divided draw drawn edges equal angles equimultiples ference fore four magnitudes frustum given point given straight line gles harmonical harmonical mean Hence hyperbola hypotenuse inscribed join likewise locus meet parallel parallelogram parallelopiped pass pendicular pentagon perimeter perpendicular plane prism Prob produced PROP proposition pyramid quadrilateral radii radius rallel rectangle rectilineal figure regular polygon respectively right angles Scholium scribed segment sides A B similar solid angles sphere spherical angle square of A B straight lines A B tangent third three sides touch triangle ABC vertex vertical