718360
[Commentary:
The inclusion of a page number confirms that Harriot was using Commandino's edition of Apollonii Pergaei conicorum libri quattuor
(Apollonius . Proposition 33 explains how to find the tangent to any point of a parabola.
I.33 If on a parabola some point is taken, and from it an ordinate is dropped to the diameter, and, to the straight line cut off by it on the diameter from the vertex, a straight line in the same straight line from its extremity is made equal, then the straight line joined from the point thus resulting to the point taken will touch the ]
I.33 If on a parabola some point is taken, and from it an ordinate is dropped to the diameter, and, to the straight line cut off by it on the diameter from the vertex, a straight line in the same straight line from its extremity is made equal, then the straight line joined from the point thus resulting to the point taken will touch the ]
Appoll. pa: 24.b
lib. 1. pr.
[Translation: Apollonius, page 24v, Book I, Proposition ]
lib. 1. pr.
[Translation: Apollonius, page 24v, Book I, Proposition ]
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