Changes

# [[Triangle]] - see [[isosceles triangle]], [[equilateral triangle]], [[right triangle]]

# [[Triangle]] - see [[isosceles triangle]], [[equilateral triangle]], [[right triangle]]

# [[Square]] - a [[rectangle]] whose sides are all the same length

# [[Square]] - a [[rectangle]] whose sides are all the same length

# [[Pentagon]]

# [[pentagon (geometry)|Pentagon]]

# [[Hexagon]] - the shape of a bee hive cell, also used in some board games

# [[Hexagon]] - the shape of a bee hive cell, also used in some board games

# seven-sided figures are rare

# seven-sided figures are rare