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References to 'circumscribe'
1. area bounded by arc and two lines by pahio
2. construction of regular $2n$-gon from regular $n$-gon by Wkbj79
3. ellipse by matte
4. inscribe by PrimeFan
5. limit examples by pahio
6. Newton's line by vmoraru
7. perimeter of ellipse by pahio
8. pi by mathcam
9. properties of ellipse by pahio
10. regular polygon by Wkbj79
11. regular polygon and circles by pahio
12. Schooten theorem by mathcam
13. triangle by Wkbj79
14. volume of solid of revolution by pahio