1. **Problem statement:** You asked to teach the 4 quadrants in a $360^\circ$ circle and to draw a clear circle with each quadrant marked by its degree range. 2. **Formula / rule:** A full circle is $360^\circ$, and the coordinate plane is split into 4 quadrants of equal size. 3. **Quadrant ranges:** - Quadrant I: $0^\circ$ to $90^\circ$ - Quadrant II: $90^\circ$ to $180^\circ$ - Quadrant III: $180^\circ$ to $270^\circ$ - Quadrant IV: $270^\circ$ to $360^\circ$ 4. **Important rule:** The quadrants go counterclockwise around the circle, starting on the positive $x$-axis at $0^\circ$. 5. **How to remember them:** - Quadrant I is top right. - Quadrant II is top left. - Quadrant III is bottom left. - Quadrant IV is bottom right. 6. **Final answer:** A $360^\circ$ circle is divided into 4 quadrants, each covering $90^\circ$.