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# Ovoid from largest axis

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### Ovoid from largest axis

1. 1. This presentation has been made for you by FRANCISCO GUIJARRO BELDA From Isaac Albéniz Secondary School Leganés. Madrid. Spain.
2. 2. HOW TO DRAW AN OVOID UPON ITS LARGEST AXIS 1) Let´s imagine AB is the given axis. You have to divide this segment into six equal parts by means of the Thales Theorem (if you don´t remember how to work it, go to 1 Term Theory page on the blog and review everything)
3. 3. 2) Points 2 and 5 are crucial to the process. Keep them and get rid of the rest. Draw a line perpendicular to AB from point 2
4. 4. 3) Draw a circle (green color) with center in point 2 and radius 2A, you will get points C and D. Draw a semicircle (red color) with center in point 2 and radius 2B, you will get points E and F
5. 5. 4) Join points E and F to 5 and extend these lines until the red semicircle
6. 6. 5) Draw two arches from points E and F and radius ED and FC until the black lines you had already drawn (in pink color in the image below). You will get points P and Q
7. 7. 6) Join points P, Q and B by means of a circle with center in 5 and radius 5P, 5Q or 5B
8. 8. 7) Get rid of everything you don´t need any more and you are done. Your beautiful egg should look like the one you have here below