The Elements of Euclid for the Use of Schools and Colleges: Comprising the First Six Books and Portions of the Eleventh and Twelfth Books : with Notes, an Appendix, and Exercises |
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Seite 3
A segment of a circle is the figure contained by a straight line and the circumference which it cuts off . 20. Rectilineal figures are those which are contained by straight lines : 21. Trilateral figures , or triangles , by three ...
A segment of a circle is the figure contained by a straight line and the circumference which it cuts off . 20. Rectilineal figures are those which are contained by straight lines : 21. Trilateral figures , or triangles , by three ...
Seite 16
By the help of this problem it may be shewn that two straight lines cannot have a common segment . If it be possible , let the two straight lines ABC , ABD have the segment AB common to both of them . From the point B draw BE at right ...
By the help of this problem it may be shewn that two straight lines cannot have a common segment . If it be possible , let the two straight lines ABC , ABD have the segment AB common to both of them . From the point B draw BE at right ...
Seite 17
Wherefore two straight lines cannot have a common segment . PROPOSITION 12. PROBLEM . To draw a straight line perpendicular to a given straight line of an unlimited length , from a given point without it . Let AB be the given straight ...
Wherefore two straight lines cannot have a common segment . PROPOSITION 12. PROBLEM . To draw a straight line perpendicular to a given straight line of an unlimited length , from a given point without it . Let AB be the given straight ...
Seite 71
... when the perpendiculars drawn to them from the centro are equal . 5 . And the straight line on which the greater perpendicular falls , is said to be farther from the centro . op ( ) . a 6. A segment of a circle is the figure Book III.
... when the perpendiculars drawn to them from the centro are equal . 5 . And the straight line on which the greater perpendicular falls , is said to be farther from the centro . op ( ) . a 6. A segment of a circle is the figure Book III.
Seite 72
A segment of a circle is the figure contained by a straight line and the circumference it cuts off . 7. The angle of a segment is that which is contained by the straight line and the circumference . 8. An angle in a segment is the angle ...
A segment of a circle is the figure contained by a straight line and the circumference it cuts off . 7. The angle of a segment is that which is contained by the straight line and the circumference . 8. An angle in a segment is the angle ...
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ABCD AC is equal angle ABC angle BAC Axiom base bisected Book centre chord circle ABC circumference common Construction Corollary Definition demonstration describe a circle described diameter difference divided double drawn equal equal angles equiangular equilateral equimultiples Euclid extremities fall figure fixed formed four fourth given circle given point given straight line greater half Hypothesis inscribed intersect join less magnitudes manner meet multiple namely opposite sides parallel parallelogram pass perpendicular plane polygon PROBLEM produced proportionals PROPOSITION Q.E.D. PROPOSITION quadrilateral radius ratio reason rectangle contained rectilineal figure remaining respectively right angles segment shew shewn sides similar square straight line &c straight line drawn suppose Take taken THEOREM third triangle ABC twice Wherefore whole
Beliebte Passagen
Seite 286 - 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.
Seite 30 - 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. either the sides adjacent to the equal...
Seite 34 - IF a straight line fall upon two parallel straight lines, it makes the alternate angles equal to one another; and the exterior angle equal to the interior and opposite upon the same side; and likewise the two interior angles upon the same side together equal to two right angles...
Seite 37 - 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 together equal to two right angles.
Seite 12 - THE angles at the base of an isosceles triangle are equal to one another : and, if the equal sides be produced, the angles upon the other side of the base shall be equal.
Seite 302 - Describe a circle which shall pass through a given point and touch a given straight line and a given circle.
Seite 220 - 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.
Seite 354 - Prove that the square on any straight line drawn from the vertex of an isosceles triangle to the base, is less than the square on a side of the triangle by the rectangle contained by the segments of the base : and conversely.
Seite 104 - 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.
Seite 96 - The opposite angles of any quadrilateral figure inscribed in a circle, are together equal to two right angles.
Bibliografische Informationen
| Titel | The Elements of Euclid for the Use of Schools and Colleges: Comprising the First Six Books and Portions of the Eleventh and Twelfth Books : with Notes, an Appendix, and Exercises |
| Autoren | Euclid, Isaac Todhunter |
| Herausgeber | Isaac Todhunter |
| Verlag | Macmillan, 1867 |
| Original von | University of Michigan |
| Digitalisiert | 11. Juni 2007 |
| Länge | 400 Seiten |
| Zitat exportieren | BiBTeX EndNote RefMan |