This qualitative research brought to light the mathematics principles used by visual artists of Iloilo, a province in the Island of Panay in Central Philippines. I used case study of multiple cases to determine the mathematical tools used by, the mathematical patterns and meaning in the artworks of, the view on mathematics and art of five distinguished Ilonggo artists; namely, Edgar Gonzales, Boy M, Alan Cabalfin, Allain Hablo, and Sabrec who were chosen through snowball and purposive sampling. The principles of constructionism and symbolic interactionism backed up the thematic, mathematical, semiotic, computer, and cross-case analysis of data. Interview, artifacts, and observation were used to triangulate the results. The findings revealed that mathematical tools anchored on estimation, measurement, calculation, and geometry were applied by Ilonggo artists. Concepts in geometry that artist integrated in their mathematical tools were perspective, transformation, construction, geometry symbolism, and geometry of frames. I analyzed two artworks per artist to determine the mathematics behind the composition of artworks elements. I found out that mathematics processes that involve perspective, analytic geometry, ratio and proportion, transformation, and golden rectangle could be used to spur mathematical discussion of Ilonggo artworks. Artist of viewed mathematics to be both important and rigorous. There was an overarching artists` view that art is an avenue for expression and set of rules and guidelines could be limiting. Artist also viewed art as a medium to help others, that is, it was use to sustained local culture and to help the family. Through the results of this inquiry, I develop the integration of mathematics in art model that could be utilized in developing art-base curriculum, art-base teaching strategies, and mathematically-anchored art technique. Embedded in the discussion of the results and recommendation are the potentials of art in teaching mathematics and in promoting local culture.