What is another word for "subtend"?

Roget's Thesaurus (1911) lists these synonyms for "subtend": against, and, antarctic, antipodal, antipodes, antonym, arctic, asunder, contraposition, contrariety, converse, counterpart, diametrically, face, facing, inverse, inversion, opposite, opposition, over, polarity, reverse, septentrional, side, subcontrary, the, vis, way.