| Robert Simson - Conic sections - 1775 - 306 pages
...triangle through the axis and the fecond plane. Let there be a cane, its vertex the point Fig. A, and bafe **the circle BC ; let it be cut by a plane through the axis, and let the** triangle ABC be the fection ; let it be cut alfo by another plane, cutting its bafe in the direction... | |
| Robert Simson - Conic sections - 1817 - 298 pages
...the triangle through the axis, and of the same plane cutting the base. Fig. is. Let there be a cone, **the vertex of which is the point A, and the base the circle BC ; let it be cut** through the axis by a plane, and let the section be the triangle ABC ; let it be also cut by another... | |
| Georgia Lynette Irby-Massie, Paul Turquand Keyser - History - 2002 - 440 pages
...any given straight line. Let there be a cone whose vertex is the point A and base the circle BF, and **let it be cut by a plane through the axis, and let the section** so made be the [axial] triangle ABF; now let it be cut by another plane cutting the circle BF in the... | |
| Georgia Lynette Irby-Massie, Paul Turquand Keyser - History - 2002 - 440 pages
...any given straight line. Let diere be a cone whose vertex is die point A and base die circle BF, and **let it be cut by a plane through the axis, and let** die section so made be die [axial] triangle ABF; now let it be cut by anodier plane cutting die circle... | |
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