“To Monet, Giverny” 1983, (oil on canvas), by Abdallah Benanteur in the show “Taking Shape: Abstractions from the Arab World, 1950s-1980,’’ at Boston College’s McMullen Museum of Art, in Boston, through June 6. The show explores abstract art from North Africa, West Asia and the Arab diaspora, an area encompassing a huge variety of cultures, ethnicities, languages and more.