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- (transitive, mathematics) To use an angle to delimit (mark off, enclose) part of a straight or curved line, for example an arc or the opposite side of a triangle.
- A 43° angle subtends an arc of about 0.75 meters on a circle with a radius of 1 meter.
- (transitive, also mathematics) To extend or stretch opposite something; to be part of a straight or curved line that is opposite to and delimits an angle.
- A hypotenuse subtends the right angle of a right triangle.
- An arc measuring about 0.75 meters on a circle with a radius of 1 meter subtends an angle of about 43°.
- 2012, Me, myself, us,The Economist, 16th august 2012 issue
- ...trillions of bacteria, each equally an individual, which are found in a person’s gut, his mouth, his scalp, his skin and all of the crevices and orifices that subtend from his body’s surface.
to use an angle to delimit part of a straight or curved line
to extend or stretch opposite something, often to delimit an angle