Question

If one of the pairs of altenate angles is congruant
then the lines in.​

Answer 1

Answer:

• Proposition 2.27 of Euclid's Elements, a theorem of absolute geometry ( hence valid in both hyperbolic and Euclidean Geometry), proves that if the angles of a pair of alternate angles of a transversal are congruent then the two lines are parallel (non - interesting).

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