Drawing with a compass
Japanese school year: Elementary 3
What you learn
Learn how to use a compass to draw circles and accurately transfer line segment lengths. These techniques are useful for creating geometric patterns and constructing triangles with specified side lengths. Prior understanding of ruler usage and the meaning of a circle's radius will help you practice effectively.
Key points
This explains how to draw a circle with a compass. Hold the needle firmly at the center and turn the pencil once around.
This explains how to copy lengths using a compass. Match the opening to a line to compare lengths or copy them elsewhere.
This explains how to draw a triangle with a compass. Draw arcs from the corners using side lengths, and connect where they meet.
Choose a set to practice.