The compound adjective 'two-page' is a transparent modern English formation. The numeral 'two' originates from Proto-Germanic 'twai', which has cognates across Indo-European languages, such as Latin 'duo' and Greek 'dyo'. The word 'page' entered English via French from Latin 'pāgina', which originally referred to a trellis or a fixed strip of land, later evolving to mean a column of writing and finally a single side of a leaf in a book. The logic of the compound is purely descriptive, directly combining the quantity 'two' with the unit 'page' to specify the extent of a document or section.

Structure: two (number) + page (sheet) - two: From Old English 'twā', the feminine and neuter form of 'twēgen' (two). It functions as a numerical determiner/quantifier. - page: From Old French 'page', from Latin 'pāgina' (a sheet, a page, a column). It functions as a noun, here used attributively to form a compound adjective.