1. to extend under or be opposite to
Usage: geometry; technical
2. to form an angle at a particular point when lines are drawn from the ends of an arc or line segment
Usage: geometry; mathematics

Examples

• The arc subtends an angle of 60 degrees at the center of the circle.
• In this triangle, the base subtends the largest angle.
• The chord subtends a right angle at the circumference.
• This line segment subtends equal angles at both points.
• The diameter subtends a semicircle.
• These two points subtend the same arc on the circle.