L6_A
1. Definition: Closed Curves, Simple Closed Curves and
1. Definition: Closed Curves, Simple Closed Curves and
Positive Oriented Simple Closed Curves
2. Motivation: Dido’s Problem
L6_B
1. Theorem: Isoperimetric Inequality
1. Theorem: Isoperimetric Inequality
2. Recall: Green’s Theorem
L6_C
1. Proof: Isoperimetric Inequality
1. Proof: Isoperimetric Inequality