Introduction and books 1,2The University Press, 1908 |
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Σελίδα 9
... rectangle equal to the rectangle contained by AB , AC and deficient by a square . " Moreover the treatise is no fragment , but finishes with the words " end of the treatise , " and is a well - ordered and compact whole . Hence we may ...
... rectangle equal to the rectangle contained by AB , AC and deficient by a square . " Moreover the treatise is no fragment , but finishes with the words " end of the treatise , " and is a well - ordered and compact whole . Hence we may ...
Σελίδα 26
... rectangle is greatest if the base be given , and the square greatest if the base be not given etc. He returns to the subject on I. 37 about triangles . Compare ' also his note on I. 4. These notes may have been taken from Pappus . 1 ...
... rectangle is greatest if the base be given , and the square greatest if the base be not given etc. He returns to the subject on I. 37 about triangles . Compare ' also his note on I. 4. These notes may have been taken from Pappus . 1 ...
Σελίδα 56
... rectangle , " " magnitude , " " number , " " " point , " ' side , " " circle , " " straight line , " " area " and the like , of adjectives such as " remaining , " " right , " right , " " whole , " " proportional , " and of other parts ...
... rectangle , " " magnitude , " " number , " " " point , " ' side , " " circle , " " straight line , " " area " and the like , of adjectives such as " remaining , " " right , " right , " " whole , " " proportional , " and of other parts ...
Σελίδα 128
... rectangle ) " falls short , " we have { ( a - y ) -z } z = y , whence 2z = ( a − y ) ± √ { ( a − y ) 2 - 4y2 } . And y may be chosen arbitrarily , provided that it is not greater than a / 3 . Hence there are an infinite number of ...
... rectangle ) " falls short , " we have { ( a - y ) -z } z = y , whence 2z = ( a − y ) ± √ { ( a − y ) 2 - 4y2 } . And y may be chosen arbitrarily , provided that it is not greater than a / 3 . Hence there are an infinite number of ...
Σελίδα 141
... FAE is equal to the angle CDE , whence A , B , D , F are concyclic . 1 Zeuthen , p . 93 . 2 Hankel , p . 141. ́ 3 Pappus , VII . pp . 830-2 . ED . Therefore the rectangle AE , EB is equal CH . IX . §6 ] 141 OTHER TECHNICAL TERMS.
... FAE is equal to the angle CDE , whence A , B , D , F are concyclic . 1 Zeuthen , p . 93 . 2 Hankel , p . 141. ́ 3 Pappus , VII . pp . 830-2 . ED . Therefore the rectangle AE , EB is equal CH . IX . §6 ] 141 OTHER TECHNICAL TERMS.
Συχνά εμφανιζόμενοι όροι και φράσεις
angle ABC angle ACB angle BAC angles equal Apastamba Apollonius Arabic Archimedes Aristotle assumed axiom base BC bisects Book Campanus centre circle circumference coincide commentary Common Notion congruent construction contained definition diameter drawn edition Elements enunciation equal angles equal sides equal to AC Eucl Euclid Euclid's Elements Eudemus Eutocius exterior angle figure Fihrist follows Geminus geometry given straight line gives gnomon greater Greek Heiberg Heron hypothesis ibid interpolated isosceles triangle joined lemma length less Let ABC magnitude means meet method observed Pappus parallel parallelogram passage perpendicular plane Plato porism Posidonius postulate problem Proclus produced proposition proved Pythagoras Pythagorean Pythagorean theorem quoted rectangle reductio ad absurdum reference remaining angles respectively right angles right-angled triangle says Schol scholia segment semicircle Simplicius Simson square suppose surface Theon Theonine MSS theorem things translation triangle ABC words καὶ τὸ
Δημοφιλή αποσπάσματα
Σελίδα 322 - AB be the given straight line ; it is required to divide it into two parts, so that the rectangle contained by the whole, and one of the parts, shall be equal to the square of the other part.
Σελίδα 204 - After remarking that the mathematician positively knows that the sum of the three angles of a triangle is equal to two right angles...
Σελίδα 259 - If two triangles have two sides of the one equal to two sides of the...
Σελίδα 188 - That, if a straight line falling on two straight lines make the interior angles on the same side less than two right angles, the two straight lines, if produced indefinitely, meet on that side on which are the angles less than the two right angles.
Σελίδα 204 - In any triangle, the sum of the three angles is equal to two right angles, or 180°.
Σελίδα 162 - A plane angle is the inclination to one another of two lines in a plane which meet one another and do not lie in a straight line.
Σελίδα 167 - When a straight line set up on a straight line makes the adjacent angles equal to one another, each of the equal angles is right, and the straight line standing on the other is called a perpendicular to that on which it stands.
Σελίδα 257 - Through a given point to draw a straight line parallel to a given straight line, Let A be the given point, and BC the given straight line : it is required to draw through the point A a straight line parallel to BC.
Σελίδα 176 - Parallel straight lines are straight lines which, being in the same plane and being produced indefinitely in both directions, do not meet one another in either direction.
Σελίδα 235 - Upon the same base, and on the same side of it, there cannot be two triangles that have their sides which are terminated in one extremity of' the base, equal to one another, and likewise those which are terminated in the other extremity.