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2. Ellipsograph - Wikipedia

   en.wikipedia.org/wiki/Ellipsograph

   Wooden ellipsograph (ca. 1900) now at Smithsonian Ellipsograph on display at Musée d'histoire des sciences de la Ville de Genève. An ellipsograph is a trammel of Archimedes intended to draw, cut, or machine ellipses, e.g. in wood or other sheet materials.

3. Greek letters used in mathematics, science, and engineering

   en.wikipedia.org/wiki/Greek_letters_used_in...

   Greek letters are used in mathematics, science, engineering, and other areas where mathematical notation is used as symbols for constants, special functions, and also conventionally for variables representing certain quantities.

4. Perimeter of an ellipse - Wikipedia

   en.wikipedia.org/wiki/Perimeter_of_an_ellipse

   In more recent years, computer programs have been used to find and calculate more precise approximations of the perimeter of an ellipse. In an online video about the perimeter of an ellipse, recreational mathematician and YouTuber Matt Parker, using a computer program, calculated numerous approximations for the perimeter of an ellipse. [4]

5. Illumination problem - Wikipedia

   en.wikipedia.org/wiki/Illumination_problem

   Roger Penrose's solution of the illumination problem using elliptical arcs (blue) and straight line segments (green), with 3 positions of the single light source (red spot).

6. Formula editor - Wikipedia

   en.wikipedia.org/wiki/Formula_editor

   LibreOffice Math [2] Yes Yes No No Yes No Yes No Windows, Linux, Mac Tool to create formulae that can be embedded inside other suite documents png, jpg, pdf, html, xml, OLE. EPUB math-objects are not included in EPUB yet. Yes LiveMath: Yes Yes No No Yes Windows, Mac, Linux LiveMath Maker, LiveMath View, LiveMath Plugins available. No LyX: Yes ...

7. Ellipse - Wikipedia

   en.wikipedia.org/wiki/Ellipse

   An ellipse (red) obtained as the intersection of a cone with an inclined plane. Ellipse: notations Ellipses: examples with increasing eccentricity. In mathematics, an ellipse is a plane curve surrounding two focal points, such that for all points on the curve, the sum of the two distances to the focal points is a constant.

8. AOL Mail

   mail.aol.com

   Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

9. Straightedge and compass construction - Wikipedia

   en.wikipedia.org/wiki/Straightedge_and_compass...

   In geometry, straightedge-and-compass construction – also known as ruler-and-compass construction, Euclidean construction, or classical construction – is the construction of lengths, angles, and other geometric figures using only an idealized ruler and a pair of compasses.