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| Begin by placing three rolls of masking tape in an equilateral triangular array on a table top. These rolls of tape serve to immobilize the Christmas decorations. Place a Christmas decoration on one of the rolls of tape. | ||
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Place a Christmas decoration on the second roll of tape, adjusting the locations of the
rolls of tape so the two ornaments just touch. Place a Christmas decoration on the third
roll of tape, adjusting the locations of the rolls of tape so the three ornaments just touch.
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Return to Optical Basin Boundaries.