Definition:Congruence (Geometry)/Opposite
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Definition
Let $A$ and $B$ be $3$-dimensional figures which are congruent.
$A$ and $B$ are oppositely congruent if and only if $A$ and $B$ cannot be made to coincide with rotations and translations, but also need a reflection for this to happen.
Also see
Sources
- 1998: David Nelson: The Penguin Dictionary of Mathematics (2nd ed.) ... (previous) ... (next): congruent: 1.
- 2008: David Nelson: The Penguin Dictionary of Mathematics (4th ed.) ... (previous) ... (next): congruent: 1.