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Note that congruences alter some properties, such as location and orientation, but leave others unchanged, like distance and angle s. The latter sort of properties are called invariant ( mathematics ) | invariant s and studying them is the essence of geometry.

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Note that congruences alter some properties, such as location and orientation, but leave others unchanged, like distance and angle s. The unchanged properties are called invariant ( mathematics ) | invariant s.

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Promote Demote Fragment Fix

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