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 14
... draw a straight line at right angles to a given straight line , from a given point in the same . Let AB be the given straight line , and C a given point in it . It is required to draw a straight line from the point C at right angles to ...
... draw a straight line at right angles to a given straight line , from a given point in the same . Let AB be the given straight line , and C a given point in it . It is required to draw a straight line from the point C at right angles to ...
Side 111
... drawn from the given point A. Secondly , if the given point be in the circumference of the circle , as the point D , draw DE to the center E , and DF at right angles to DE : then DF touches the circle . ( III . 16. Cor . ) Q.E.F. ...
... drawn from the given point A. Secondly , if the given point be in the circumference of the circle , as the point D , draw DE to the center E , and DF at right angles to DE : then DF touches the circle . ( III . 16. Cor . ) Q.E.F. ...
Side 260
... draw from the point A a straight line perpen- dicular to the plane BH . In the plane draw any straight line BC , and from the point A draw AD perpendicular to BC . ( 1. 12. ) If then AD be also perpendicular to the plane BH , the thing ...
... draw from the point A a straight line perpen- dicular to the plane BH . In the plane draw any straight line BC , and from the point A draw AD perpendicular to BC . ( 1. 12. ) If then AD be also perpendicular to the plane BH , the thing ...
Side 299
... draw two lines which shall meet at a point in that line , and make equal angles with it . 17. From every point of a given straight line , the straight lines drawn to each of two given points on opposite sides of the line are equal ...
... draw two lines which shall meet at a point in that line , and make equal angles with it . 17. From every point of a given straight line , the straight lines drawn to each of two given points on opposite sides of the line are equal ...
Side 301
... drawn to the oppo- site angle of the triangle , it will bisect that angle . 42. From the vertex of a scalene triangle draw a right line to the base , which shall exceed the less side as much as it is exceeded by the greater . 43. Divide ...
... drawn to the oppo- site angle of the triangle , it will bisect that angle . 42. From the vertex of a scalene triangle draw a right line to the base , which shall exceed the less side as much as it is exceeded by the greater . 43. Divide ...
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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
Populære passager
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.