Angry Owl or Kissing Fish?

Take two straight lines:


straight lines

and have them cross:


opposite angles

The opposite angles are equal:


Opposite angles


We often show that angles are the same by marking them with a dot, and we always mark angles we’re interested in with an arc inside the angle.


But when we do that, we left with a difficult question.  Do we get an …


Angry Owl or Kissing Fish?


What do you see?

Angry Owl or Kissing Fish?


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