subtend
/səbˈtɛnd/
verb
- (of a line, arc, or side) to be opposite to and form the boundary of an angle or geometric figure.
- The chord of a circle subtends an arc that is twice the angle at the center.
- The base of the isosceles triangle subtends the vertex angle.
- In a triangle, the side opposite an angle is said to subtend that angle.
Synonyms