How to account for the enduring vitality of geometric abstraction a century after its debut? For clues, look to the work of Brooklyn-based painter Don Voisine. His work is a prime example of how contemporary artists mine the past to invent the future. Over several decades, he’s shown how squares, circles, rectangles and triangles can be endlessly subdivided and reconfigured. In so doing, he’s carved out a unique niche, identifiable by dark heraldic forms set at odd angles interpenetrated by still other off-kilter geometric forms.