He cut the apple into exactly two equal parts.

His heart was broken in two.

She is my uterine sister.

The miscalculation of his ability was the cause of this project's failure.

There is a great difference between his cooking and mine.

He is my first cousin once removed.

In linear algebra, symmetric matrices play a very important role.

This flower shows perfect bilateral symmetry.

This piece of art has perfect symmetry.

When the tidal range is large, the coastline changes significantly.