Every Bongard Problem on the left shows invariance under some transformation in left sub-examples.
Some Bongard Problems on the right are symmetrical or have sub-examples that are symmetrical.
See BP760 for the version with links to pages on the OEBP instead of images of Bongard Problems.
Adjacent-numbered pages: BP831 BP832 BP833 BP834 BP835  *  BP837 BP838 BP839 BP840 BP841
meta (see left/right), miniproblems, creativeexamples, assumesfamiliarity, structure, presentationinvariant
boxes_bpimage_three_per_side [smaller | same | bigger]
Aaron David Fairbanks