Common Tangents Between 2 Externally Touching Circles

Common Tangents between 2 externally touching circles

graph TD; A[Common Tangents between 2 externally touching circles] --> B[Definition]; A --> C[Properties]; A --> D[Formulas]; B --> E[Externally touching circles]; B --> F[Tangent]; C --> G[Number of common tangents]; C --> H[Position of common tangents]; D --> I[Length of common tangents]; D --> J[Angle between common tangents];