## Proof That Torsion For a Plane Curve is Zero

Theorem

The torsionfor a plane curveis zero.

Proof

The tangent vector

The Frenet formula

The binormal vectoris defined as

The Frenet formula

Henceso

Theorem

The torsionfor a plane curveis zero.

Proof

The tangent vector

The Frenet formula

The binormal vectoris defined as

The Frenet formula

Henceso