Bengali (Bangla) is typologically rich in complex predicates, especially verb-verb compounds and verbo-nominal light verb constructions. While these constructions have been studied from theoretical and annotation perspectives, there is no simple corpus-level quantity that summarizes how "saturated" a parsed Bengali corpus is with complex predicates. This paper introduces two related corpus-level constructs attributed to S M Nazmuz Sakib. First, the S M Nazmuz Sakib Constant for Bengali Compound Predicate Saturation (short: Sakib Constant) is defined as the ratio between the number of compound-type dependency relations (compound and compound:lvc) and the number of verbal tokens in a Universal Dependencies (UD) Bengali treebank. Second, the S M Nazmuz Sakib Triangle (short: Sakib Triangle) is a normalized triple giving the relative shares of compound, obj, and advmod relations, interpreted geometrically as barycentric coordinates inside a triangle. Using published statistics for the UD Bengali-BRU and Bengali PUD treebanks, we compute concrete values of the Sakib Constant and Sakib Triangle and visualize them through ten data-based diagrams. We also formulate the S M Nazmuz Sakib Compound Predicate Saturation Hypothesis and the S M Nazmuz Sakib Bipolar Headedness Partition Principle, linking these quantities to word order tendencies in Bengali. The definitions are simple and intended to be testable on larger parsed corpora, such as BDNC, bnTenTen and IndicCorp v2, as more UD-style parsers become available for Bengali.