Euclid's Elements of Geometry: Chiefly from the Text of Dr. Simson, with Explanatory Notes .... the first six booksJ. W. Parker & son, 1860 - 361 páginas |
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Página 13
... given rectilineal angle , that is , to divide it into two equal angles . Let ... line AF shall bisect the angle BAC . Because AD is equal to AE , ( constr ... line AF . Q.E.F. PROPOSITION X. PROBLEM . To bisect a given finite straight ...
... given rectilineal angle , that is , to divide it into two equal angles . Let ... line AF shall bisect the angle BAC . Because AD is equal to AE , ( constr ... line AF . Q.E.F. PROPOSITION X. PROBLEM . To bisect a given finite straight ...
Página 14
... line at right angles to a given straight line , from a given point in the same . Let AB be the given straight line , and Ca given point in it . It is required to draw a straight line from the point C at right angles to AB . F " D C E B ...
... line at right angles to a given straight line , from a given point in the same . Let AB be the given straight line , and Ca given point in it . It is required to draw a straight line from the point C at right angles to AB . F " D C E B ...
Página 15
... line CH drawn from the given point C , shall be perpendicular to the given straight line AB . Join FC , and CG . Because FH is equal to HG , ( constr . ) and HC is common to the triangles FHC , GHC ; the two sides FH , HC , are equal to ...
... line CH drawn from the given point C , shall be perpendicular to the given straight line AB . Join FC , and CG . Because FH is equal to HG , ( constr . ) and HC is common to the triangles FHC , GHC ; the two sides FH , HC , are equal to ...
Página 22
... given straight line , to make a rectilineal angle equal to a given rectilineal angle . Let AB be the given straight line , and A the given point in it , and DCE the given rectilineal angle . It is required , at the given point A in the ...
... given straight line , to make a rectilineal angle equal to a given rectilineal angle . Let AB be the given straight line , and A the given point in it , and DCE the given rectilineal angle . It is required , at the given point A in the ...
Página 28
... line are parallel to each other . Let the straight lines AB , CD , be each of them parallel to EF . Then shall AB be ... given point parallel to a given straigh line . Let A be the given point , and BC the given straight line . It is ...
... line are parallel to each other . Let the straight lines AB , CD , be each of them parallel to EF . Then shall AB be ... given point parallel to a given straigh line . Let A be the given point , and BC the given straight line . It is ...
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Términos y frases comunes
A₁ ABCD AC is equal Algebraically angle ABC angle ACB angle BAC Apply Euc axiom base BC chord circle ABC constr describe a circle diagonals diameter divided double draw equal angles equiangular equilateral triangle equimultiples Euclid Euclid's Elements exterior angle Geometrical given circle given line given point given straight line given triangle gnomon greater hypotenuse inscribed intersection isosceles triangle less Let ABC line AC lines be drawn meet the circumference multiple opposite angles parallelogram pentagon perpendicular porism problem produced Prop proportionals proved Q.E.D. PROPOSITION quadrilateral radius ratio rectangle contained rectilineal figure remaining angle right angles right-angled triangle segment semicircle shew shewn similar similar triangles square on AC tangent THEOREM touch the circle trapezium triangle ABC twice the rectangle vertex vertical angle wherefore
Pasajes populares
Página 54 - If two triangles have two sides of the one equal to two sides of the...
Página 89 - 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...
Página 38 - Let ABCD be the given rectilineal figure, and E the given rectilineal angle. It is required to describe a parallelogram equal to ABCD, and having an angle equal to E.
Página 144 - The angle in a semicircle is a right angle; the angle in a segment greater than a semicircle is less than a right angle; and the angle in a segment less than a semicircle is greater than a right angle.
Página 18 - Any two angles of a triangle are together less than two right angles.
Página 266 - If two triangles have one angle of the one equal to one angle of the other and the sides about these equal angles proportional, the triangles are similar.
Página 152 - IF from any point without a circle two straight lines be drawn, one of which cuts the circle, and the other touches it ; the rectangle contained by the whole line which cuts the circle, and the part of it without the circle, shall be equal to the square of the line which touches it.
Página 7 - From a given point to draw a straight line equal to a given straight line. Let A be the given point, and BC the given straight line; it is required to draw from the point A a straight line equal to BC.
Página 3 - A diameter of a circle is a straight line drawn through the centre, and terminated both ways by the circumference.
Página 96 - In obtuse-angled triangles, if a perpendicular be drawn from either of the acute angles to the opposite side produced, the square on the side subtending the obtuse angle is greater than the squares on the sides containing the obtuse angle, by twice the rectangle contained by the side...