Circles for radius, spokes for angle
Each ring marks a fixed distance from the centre, while the radial lines — drawn every 15°, with the main axes emphasised — mark angles around the circle. Together they let you place a point by its radius and angle, exactly as polar coordinates describe it.
For trig, physics and design
Plot polar functions and trigonometric curves, work with phasors and vectors in physics, design radial patterns and mandalas, or analyse directional data. The evenly spaced rings make reading off a radius straightforward, and the 15° spokes cover common angles cleanly.
Adjust the rings and spokes
Change the ring spacing in the editor to set how many circles fit, adjust line colour and weight, switch paper size, and add a header. Export a multi-page PDF for repeated use.