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A. Polygons; those that have their sides and angles equal we would call regular polygons. Q. What would you call those angles whose sides were not equal? A. Irregular polygons, and the smallest number of sides a polygon can have is three, and the number of corners are always equal to the number of sides. Ellipse or Oval. Q. What is this? A. An ellipse or an oval.
A mature tendril made an ellipse in 6 hrs.; so that it moved much more slowly than the internodes. The ellipses which were swept, both in a vertical and horizontal plane, were of large size. The petioles are not in the least sensitive, but revolve like the tendrils. We thus see that the young internodes, the petioles, and the tendrils all continue revolving together, but at different rates.
It is an oval curve, which may be drawn by fixing two pins in a sheet of paper at S and H, fastening a string, SPH, to the two pins, and stretching it with a pencil point at P, and moving the pencil point, while the string is kept taut, to trace the oval ellipse, APB. S and H are the foci. Kepler found the sun to be in one focus, say S. AB is the major axis. DE is the minor axis. C is the centre.
When all the waggons have got into their places, the ellipse will be completed; but it is customary to leave an open space at the end a sort of avenue by which the enclosure may be entered. When horses and cattle require to be corralled, this entrance can be closed, by simply stretching a rope across it.
The course was in the shape of an ellipse, with rather sharp turns at either end, where the contestants, if they did not want a spill, or a bad skid, must slacken their pace. It was on the two straight stretches that speed could be made.
But that identity was not ascertained until Savary of Paris showed, in 1827, that the movements of the above-named binary in the Great Bear could be represented with all attainable accuracy by an ellipse calculated on orthodox gravitational principles with a period of 58-1/4 years.
Now this point is necessarily the point I which is sought, since the plane drawn through TK can touch the spheroid at one point only. And this point I is easy to determine, since it is needful only to draw from the point T, which is in the plane of this Ellipse, the tangent TI, in the way shown previously.
But he knew that the only hope they had was to get the ship in a closed ellipse around the star, and a closed ellipse meant that they would be forever bound to the star as a planet! Helpless, for not even the titanic power of the Ancient Mariner could enable them to escape!
In its standard ordinance for chimney construction, the National Board of Fire Underwriters calls for fireplace flues with a draft area of one-twelfth of that of the fireplace opening and determines this area as a circle or ellipse that will fit within the tile used to line the flue.
Towards the east, a large luminous disk was shining brilliantly above the mountain peaks. This luminous globe, lengthening out into the shape of an ellipse, appeared to move along. In fact, it was descending slowly over the wooded crests. Lucien and l'Encuerado kept plying us with questions in reference to it, which we were unable to answer. "What is it?" cried Sumichrast. "A meteor!"
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