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What are irregular shapes?

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Quick Answer

Irregular shapes are those with sides of different lengths and angles that are unequal. Regular shapes have sides with equal lengths and have angles of the same size.

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Full Answer

Shapes like squares and equilateral triangles are considered regular shapes because they have predictably identical sides and angles. If a person were to take an equilateral triangle and make each of the sides different lengths and change the size of each angle, the regular-shaped triangle would turn into an irregular shape. Irregular shapes do not have to look messy or weird, though; a shape that resembles a rectangle with a chunk cut out of it can be considered irregular, even though it is composed of straight lines and has a neat and orderly appearance.

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