 | Euclides - 1660 - 368 pages
...it be leflej it is an obtult-anglcd Conej if greater, an acute- angled Cone. XI XThe Axis of a Gone is that fix'd line about which the triangle is moved. , XX. The 17о rbeelevtntb tt : Г." — X X.The Bafe of a Cone is the cjrcje,which ц defcribcd by the tight... | |
 | Euclid, Isaac Barrow - Euclid's Elements - 1732 - 436 pages
...is a .rectangled Cone : But if it be left, it is an obtufe-angled Cone ; if greater, an acute-angled Cone. XIX. The Axis of a Cone is that fix'd line about ivhich the triangle is moved. XX. The Bafe of a Cone is the circle, which isdeIcribed by the right... | |
 | John Ward (of Chester.) - Mathematics - 1747 - 516 pages
...Reßangled Cone; " but if it be lefs, 'tis an Obtufe angled Cone; it greater, an ** Acute angled Cone. The Axis of a Cone is that fix'd Line ** about which the Triangle is mov'd : The Bafe of a Cone is the " Circle, which is defcrio'd by the Right Line mov'd about." (Defin.... | |
 | John Ward - Mathematics - 1747 - 492 pages
...; *' but if it be lefs, 'tis an Obtufe-angled Cone; if greater, art " Acute- angled Cone. The /fxis of a Cone is that fix'd Line " about which the Triangle is jnov'd : The Bafe of a Cone is the " Circle, which is defcrib'd by the Right Line mov'd about." (Defin.... | |
 | Euclid - Cylinder (Mathematics) - 1751 - 420 pages
...Cone is a re&angled Cone: But if it be lefs, it is an obtufe-angJed Cone ; if greater, an acute-angled Cone. XIX. The Axis of a Cone is that fix'd line about which the triangle is moved. XX. The Bafe of a Cone is the circle, \vhich is defcribed by the right-line moved about. XXI. A Cylinder is.... | |
 | Robert Simson - Trigonometry - 1762 - 488 pages
...XI. the Cone is called a right angled Cone ; if it be lefs than the other fide, an obtufe angled, and if greater, an acute angled Cone. XIX. The axis of a Cone is the fixed ftraight line about which the triangle revolves. XX. The bafe of a Cone is the circle defcribed... | |
 | John Keill - Geometry - 1782 - 472 pages
...contain the Right Angle, then the Cone is a retlanguldr Cone j butt tf *f be lefs, it is an cbtufe-angkd Cone ; if greater, an acute- angled Cone. XIX. The Axis of a Cone- is that fixed Right Line, about which the Triangle is moved. XX. The Safe of a\Cone is the Circle described... | |
 | Robert Simson - Trigonometry - 1804 - 528 pages
...angle, the Cone is called a right angled Cone ; if it be lefs than the other fide, an obtufe angled, and if greater, an acute angled Cone. XIX. The axis of a Cone is the fixed ftraight line about which the triangle revolves. XX. The bafe of a Cone is the circle defcribed... | |
 | Euclides - 1814 - 560 pages
...right angled cone; if it BooR XT. be less than .the other side, an obtuse angled, and if w ~v* fc-< greater, an acute angled cone. XIX. The axis of a cone is the fixed straight line about which the triangle revolves. XX. The base of a cone is the circle described... | |
 | Peter Nicholson - Mathematics - 1825 - 1058 pages
...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. XIX. The axis of a cone is the fixed straight line about which the triangle revolves. XX. The base of a cone is the circle described... | |
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... be less than the other side, an obtuse angled ; and if greater, an acute angled cone. XIX. The axis of a cone is the fixed straight line about which the triangle revolves. XX. The base of a cone is the circle described by that side containing the... 