Lengkung

Dalam matematik, sebuah lengkung adalah suatu objek geometri yang merukanan satu-dimensi dan berterusan. Banyak lengkung khusus telah dipelajari dalam geometri, bermula daripada bulatan.

Lengkung boleh naik dan turun. Boleh naik sahaja atau turun sahaja.

Rujukan

• A.S. Parkhomenko (2001), "Line (curve)", dalam Hazewinkel, Michiel (penyunting), Encyclopedia of Mathematics, Springer, ISBN 978-1-55608-010-4
• B.I. Golubov (2001), "Rectifiable curve", dalam Hazewinkel, Michiel (penyunting), Encyclopedia of Mathematics, Springer, ISBN 978-1-55608-010-4
• Euclid, commentary and trans. by T. L. Heath Elements Vol. 1 (1908 Cambridge) Google Books
• E. H. Lockwood A Book of Curves (1961 Cambridge)

Pautan luar

• Famous Curves Index, School of Mathematics and Statistics, University of St Andrews, Scotland
• Mathematical curves A collection of 874 two-dimensional mathematical curves
• Gallery of Space Curves Made from Circles, includes animations by Peter Moses
• Gallery of Bishop Curves and Other Spherical Curves, includes animations by Peter Moses
• YAN Kun. Research on adaptive connection equation in discontinuous area of data curve. doi:10.3969/j.issn.1004-2903.2011.01.018
• The Encyclopedia of Mathematics article on lines.
• The Manifold Atlas page on 1-manifolds.