Spotting shapes

Which 2-D and 3-D shapes can you see in these buildings?

High Museum of Art

Richard Meier, High Museum of Art, Atlanta, Georgia, 1983

St Paul’s Cathedral

Sir Christopher Wren, St Paul’s Cathedral, London, UK, 1708

One Canada Square

Cesar Pelli, One Canada Square, Docklands, UK, 1991

National Congress, Brasilia

Oscar Niemeyer, National Congress, Brasilia, Brazil, 1957