are alternative interior angles equal?

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are alternative interior angles equal?

2007-09-23 05:26:45 · 3 answers · asked by la_troublez_26 1 in Science & Mathematics ➔ Mathematics

3 answers

You mean alternate interior angles. And they are equal provided that:

a) you are working in Euclidean space, and
b) these are alternate interior angles a transversal of parallel lines (key word: parallel).

Note that if the alternate interior angles are equal, then the lines must be parallel in both Euclidean and hyperbolic geometry.

2007-09-23 05:31:36 · answer #1 · answered by Pascal 7 · 0⤊ 0⤋

alternative interior angles equal <--it is only true when a parallel line is cut by a transversal line

2007-09-23 05:39:19 · answer #2 · answered by ptolemy862000 4 · 0⤊ 0⤋

yes, when two parallel lines are cut by a transversal

2007-09-23 05:34:42 · answer #3 · answered by sfroggy5 6 · 0⤊ 0⤋