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 Llibres Llibres 51 - 60 de 195 sobre If a straight line touch a circle, and from the point of contact a straight line.... If a straight line touch a circle, and from the point of contact a straight line be drawn cutting the circle, the angles... The Teacher's Assistant in the "Course of Mathematics Adapted to the Method ... - Pàgina 44
1836 - 472 pàgines
Visualització completa - Sobre aquest llibre ## Papers for the schoolmaster, Volums 1-6

...the point of contact, cutting the circle, the angles between the touching line and the cutting line shall be equal to the angles in the alternate segments of the circle. . «• SECTION III. 1. Inscribe a circle in a given triangle. 2. Describe a circle about a given square....
Visualització completa - Sobre aquest llibre ## Elements of Geometry: Containing the First Six Books of Euclid, with a ...

Euclid, John Playfair - 1853 - 317 pàgines
...to the same two ; and when the adjacent angles are equal, they are right angles. PROP. XXXII. THEOR. If a straight line touch a circle, and from the point...line be drawn cutting the circle, the angles made by thin line with the line which touches the circle, shall be equal to the angles in the alternate segments...
Visualització completa - Sobre aquest llibre ## The Elements of Euclid, books i-vi; xi. 1-21; xii. 1,2; ed. by H.J. Hose

Euclides - 1853
...touching lines are right angles, and therefore equal : which is impossible (Az. 9). PBOP. XIX. THEOE. If a straight line touch a circle, and from the point of contact a straight line be drawn at right angles to it : then the centre of the circle shall be in that line. Let DE touch the circle...
Visualització completa - Sobre aquest llibre ## The geometry, by T. S. Davies. Conic sections, by Stephen Fenwick

...that is, FC is perpendicular to DE. Therefore, if a straight line, etc. QED PROPOSITION XIX. THEOR. If a straight line touch a circle, and from the point of contact a straight line be drawn at right angles to the touching line, the centre of the circle shall be in that line. Let the straight...
Visualització completa - Sobre aquest llibre ## The synoptical Euclid; being the first four books of Euclid's Elements of ...

Euclides - 1853
...FC; that is 5. FC is perpendicular to DE. Therefore, if a straight line, &c. QED PROP. XIX. THEOREM. If a straight line touch a circle, and from the point of contact a straight line be drawn at right angles to the touching line, the centre of the circle shall be in that line. Let the straight...
Visualització completa - Sobre aquest llibre ## The Elements of Euclid: With Many Additional Propositions ..., Part 1

Euclid - 1853 - 136 pàgines
...part ff the circumference for its base as an angle at the circumference. If a straight line touches a circle, and from the point of contact a straight line be drawn cutting the circle. They shall stand upon equal parts of the circumference, whether they be at the center or the circumfer...
Visualització completa - Sobre aquest llibre ## The first six books of the Elements of Euclid, with numerous exercises

Euclides - 1853 - 147 pàgines
...e. Therefore, if a straight line, &c. QED PROPOSITION XIX. — THEOREM. If a straight line touches a circle, and from the point of contact a straight line be drawn at right angles to the touching line, the centre of the circle shall be in that line. LET the straight...
Visualització completa - Sobre aquest llibre ## Orr's Circle of the Sciences: The mathematical sciences

William Somerville Orr - 1854
...here only to avoid interruption in the numbering of the propositions. PROPOSITION XIX.— THEOREM. If a straight line touch a circle, and from the point of contact a straight line be draw» at right angles to the touching line, the centre of the circle shall be in that. lim. PROPOSITION...
Visualització completa - Sobre aquest llibre ## Elements of Geometry: Containing the First Six Books of Euclid with a ...

John Playfair - 1855 - 318 pàgines
...; and when the adjacent angles are equal, they are right anles. •T*"*'V i^ PROP. XXXII. THEOR. Jf a straight line touch a circle, and from the point...the circle, the angles made by this line with the lute which touches the circle, shall be equal to the angles in the alternate «§•ments of the circle....
Visualització completa - Sobre aquest llibre ## Liber Cantabrigiensis, an account of the aids afforded to poor students, the ...

Robert Potts - 1855
...as c is the Arithmetic, Geometric, or Harmonic mean between a and b. 6. If a straight line touches a circle, and from the point of contact a straight...circle, the angles made by this line with the line touching the circle, shall be equal to the angles which are in the alternate segments of the circle....
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