alpha-isoptics of a triangle and their connection to alpha-isoptic of an oval

作者：Michalska Malgorzata^*; Mozgawa Witold

来源：Rendiconti del Seminario Matematico della Universita di Padova, 2015, 133: 159-172.

DOI：10.4171/RSMUP/133-8

• Isoptic curve
• convex curve
• support function
• envelope
• oval

For a fixed positive angle alpha, alpha < pi we get an explicit formulas for an alpha-isoptic curve of a triangle and study some of its properties. We use obtained results to show that alpha-isoptic of an oval is an envelope of alpha-isoptics of properly chosen triangles.

• 出版日期2015