Euclid's Elements of Geometry: Chiefly from the Text of Dr. Simson...together with a Selection of Geometrical Exercises from the Senate-house and College Examination Papers .... the first six books, and the portions of the eleventh and twelfth books read at CambridgeLongman, Green, Longman, Roberts, & Green, 1865 - 504 sider |
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Side viii
... construction of Problems by a right line and a circle , found out by the first Geometricians , will easily perceive that Geometry was invented that we might expeditiously avoid , by drawing lines , the tediousness of computation ...
... construction of Problems by a right line and a circle , found out by the first Geometricians , will easily perceive that Geometry was invented that we might expeditiously avoid , by drawing lines , the tediousness of computation ...
Side xiv
... constructions to their consequences , and the rigidly exact com- parison of those consequences with known and established truths , can scarcely fail of producing such habits of mind as will influence most beneficially our reasonings on ...
... constructions to their consequences , and the rigidly exact com- parison of those consequences with known and established truths , can scarcely fail of producing such habits of mind as will influence most beneficially our reasonings on ...
Side 44
... construction of Prop . 14 , Book II .; the first case of Prop . 33 , Book III . , and Prop . 13 , Book VI . The definition of the segment of a circle is not once alluded to in Book I. , and is not required before the discussion of the ...
... construction of Prop . 14 , Book II .; the first case of Prop . 33 , Book III . , and Prop . 13 , Book VI . The definition of the segment of a circle is not once alluded to in Book I. , and is not required before the discussion of the ...
Side 46
... construction . assumed in the Elements ; and are , in fact , problems , the possibility of which is admitted , not only because the description of them may be readily conceived , but also , because it is impossible to draw a perfectly ...
... construction . assumed in the Elements ; and are , in fact , problems , the possibility of which is admitted , not only because the description of them may be readily conceived , but also , because it is impossible to draw a perfectly ...
Side 49
... construction is required to be effected : and it is a theorem , when some Geometrical property is to be demonstrated . Every proposition is naturally divided into two parts ; a problem consists of the data , or things given ; and the ...
... construction is required to be effected : and it is a theorem , when some Geometrical property is to be demonstrated . Every proposition is naturally divided into two parts ; a problem consists of the data , or things given ; and the ...
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Euclid's Elements of Geometry: Chiefly from the Text of Dr. Simson ... Robert Potts Ingen forhåndsvisning - 2016 |
Almindelige termer og sætninger
A₁ ABCD AC is equal angle ABC angle ACB angle BAC angle equal Apply Euc base BC bisects the angle chord circle ABC circle described circle whose center circles touch circumscribing circle construction describe a circle diagonals diameter divided draw equal angles equiangular equilateral triangle equimultiples Euclid Euclid's Elements exterior angle Geometrical given circle given line given point given straight line greater hypotenuse isosceles triangle Let ABC line joining lines be drawn meet the circumference multiple opposite angles parallelogram parallelopiped pentagon perpendicular plane point of contact polygon produced Prop proved Q.E.D. PROPOSITION quadrilateral quadrilateral figure radius rectangle contained rectilineal figure right angles right-angled triangle segment semicircle shew shewn similar triangles solid angle square on AC tangent THEOREM touch the circle triangle ABC vertex vertical angle wherefore
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Side 23 - If two triangles have two angles of the one equal to two angles of the other, each to each ; and one side equal to one side, viz.
Side xiv - The sluggard is wiser in his own conceit than seven men that can render a reason.
Side 6 - If a straight line meets two straight lines, so as to " make the two interior angles on the same side of it taken " together less than two right angles...
Side 29 - All the interior angles of any rectilineal figure together with four right angles, are equal to twice as many right angles as the figure has sides.
Side 71 - If a straight line be bisected, and produced to any point ; the rectangle contained by the whole line thus produced, and the part of it produced, together with the square of half the line bisected, is equal to the square of the straight line which is made up of the half and the part produced.
Side 15 - The angles which one straight line makes with another upon one side of it, are either two right angles, or are together equal to two right angles. Let the straight line AB make with CD, upon one side of it, the angles CBA, ABD : these shall either be two right angles, or shall together be equal to two right angles. For...
Side 242 - Wherefore, in equal circles &c. QED PROPOSITION B. THEOREM If the vertical angle of a triangle be bisected by a straight line which likewise cuts the base, the rectangle contained by the sides of the triangle is equal to the rectangle contained by the segments of the base, together with the square on the straight line which bisects the angle.
Side 2 - A circle is a plane figure contained by one line, which is called the circumference, and is such that all straight lines drawn from a certain point within the figure to the circumference, are equal to one another.
Side 34 - Equal triangles, upon equal bases in the same straight line, and towards the same parts, are between the same parallels. Let the equal triangles ABC, DEF be upon equal bases BC, EF, in the same straight line BF, and towards the same parts.
Side 28 - IF a side of any triangle be produced, the exterior angle is equal to the two interior and opposite angles ; and the three interior angles of every triangle are equal to two right angles.