Spherical Image: Differential Geometry, Curve, Tangent Vector

Spray (Mathematics): Differential Geometry, Vector Field, Tangent Bundle

Asymptotic Curve: Differential Geometry of Surfaces, Tangent, Curve, Curvature

Distribution (differential geometry): Differential Geometry, Mathematics, Tangent Bundle

Tangent Indicatrix: Differential Geometry, Space Curve, Arc Length, Total Curvature