In hyperbolic geometry, an arc whose endpoints are on the edge of the poincaré disk must be a line.
a. true
b. false

It would to absolutely false to say that in hyperbolic geometry, an arc whose endpoints are on the edge of the Poincaré disk must be a line. The correct option among the two options that are given in the question is the second option or option "B". I hope the answer comes to your help.

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