1. to divide into three equal parts
Usage: geometry; mathematics

Examples

• The geometry student learned to trisect an angle using a compass and straightedge.
• It is impossible to trisect an arbitrary angle with only classical construction tools.
• The architect decided to trisect the large room into three equal sections.
• Can you trisect this line segment for the art project?
• The ancient Greeks attempted to trisect angles as part of their geometric studies.
• To trisect the circle, draw lines from the center at 120-degree intervals.