An Encyclopædia of Architecture: Historical, Theoretical, and PracticalLongman, Brown, Green, and Longmans, 1842 - 1089 Seiten |
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Seite 314
... tangent ; and the point Tis called the point of contact . 3. An angle ( fig . Prop . 33. ABD ) which has its vertex in the circumference of a circle is called an angle in the circle . 4. A part of a circle confined between two radii ...
... tangent ; and the point Tis called the point of contact . 3. An angle ( fig . Prop . 33. ABD ) which has its vertex in the circumference of a circle is called an angle in the circle . 4. A part of a circle confined between two radii ...
Seite 315
... tangent to the circle . Let the line AB ( fig . 271. ) pass through the extremity of the radius CT in such a manner that the angles CTA , CTB shall be right angles ; this line AB touches the circumference in only one point T. If AB ...
... tangent to the circle . Let the line AB ( fig . 271. ) pass through the extremity of the radius CT in such a manner that the angles CTA , CTB shall be right angles ; this line AB touches the circumference in only one point T. If AB ...
Seite 316
... tangent AB . For all other lines drawn from the point C to the line AB must pass out of the circle to arrive at this ... tangent and chord is measured by half the arc of that chord . T D B Fig . 272 . Let BTA ( fig . 273. ) be a tangent ...
... tangent AB . For all other lines drawn from the point C to the line AB must pass out of the circle to arrive at this ... tangent and chord is measured by half the arc of that chord . T D B Fig . 272 . Let BTA ( fig . 273. ) be a tangent ...
Seite 317
... tangent and chord be parallel to each other , they intercept equal arcs . Let the tangent FG ( fig . 279. ) be parallel to the chord AB ; the arc TA will be equal to the arc TB . Fig.278 . Fig . 279 . Draw the right line TA . Because ...
... tangent and chord be parallel to each other , they intercept equal arcs . Let the tangent FG ( fig . 279. ) be parallel to the chord AB ; the arc TA will be equal to the arc TB . Fig.278 . Fig . 279 . Draw the right line TA . Because ...
Seite 318
... tangent ATC ( fig . 283. ) and a secant ADB is measured by half the difference of the two inter- cepted arcs . 927 ... tangent to that circle . From the point A ( fig . 285. ) let it be required to draw a tangent to the circle DTB . Draw ...
... tangent ATC ( fig . 283. ) and a secant ADB is measured by half the difference of the two inter- cepted arcs . 927 ... tangent to that circle . From the point A ( fig . 285. ) let it be required to draw a tangent to the circle DTB . Draw ...
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