File:Normal_vectors2.svg · Wikimedia Commons · See Wikimedia Commons
Pháp tuyến (hình học)
Sign in to savein geometry, an object that is perpendicular to a given object, vector perpendicular to a curve or surface
File:Normal_vectors2.svg · Wikimedia Commons · See Wikimedia Commons
in geometry, an object that is perpendicular to a given object, vector perpendicular to a curve or surface