how to draw circle with 2 and 3 points

Introduction

Unlock the full potential of AutoCAD’s circle drawing tools! Whether you’re a beginner or need a quick refresher, learning how to draw circles using the 2‑Point and 3‑Point methods can speed up your workflow and improve your precision.

2‑Point Circle: Draw by Diameter

The 2‑Point Circle method defines a circle by selecting two endpoints of its diameter. Perfect when the diameter is dictated by existing geometry—intersections, corners, or measured endpoints.

1. Enter the CIRCLE command (CIRCLE or C) and choose 2P (2‑Point).

2. Click or enter the first endpoint of the diameter.

3. Click or enter the second endpoint—AutoCAD will then automatically draw the circle.
   This technique ensures accuracy and speed, especially when working with defined constraints in your design.

3‑Point Circle: Draw Through Three Points

The 3‑Point Circle method lets you define a circle using three points on its circumference—ideal when the exact center or radius isn’t known.

1. Invoke the CIRCLE command and select 3P (3‑Point).

2. Click or input the first point on the circumference.

3. Repeat with the second and third distinct points. AutoCAD calculates and creates the precise circle passing through all three.
   Useful in architectural, mechanical, or engineering projects where fitting shapes within boundaries is critical.

Why These Methods Matter

• Precision: Supported by object snaps like endpoint, intersection, or node—ensuring geometric accuracy.

• Efficiency: Quickly creates circles without calculating center or radius manually.

• Flexibility: Great for dynamic situations where geometry defines circle parameters.

Pro Tips for Drawing Accuracy

• Always activate OSNAP (Object Snap) to capture points precisely—especially intersections or endpoints.

• After drawing, use the Dimension tool to double-check the radius or distances for validation.

• Stay organized by placing circles in relevant layers—especially important for complex drawings.

Tutorial Video

Watch the video above for a concise, step-by-step demonstration on drawing circles using both 2‑Point and 3‑Point methods in AutoCAD. Visual learning can boost efficiency and retention!