Technically, L1 & L2 are line segments, and L3 & L4 are polylines.
Finding Perfect Squares
Remove the small words from a list of words.
Reference Index Number
Who invented zero?
Breaking Bad Tiles (Spelling with Element Symbols)
Spot the outlier
Do the line-segments intersect?
Beads on a Necklace (Convex Hulls)
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