Respuesta :

m∠3 is = 57º for this is an alternate interior angle

1) As we have a pair of parallel sides intercepted by a transversal line, then it's safe to say that

∠ 1 is an alternate interior angle and therefore m∠1 = 33º

2) The other leg of that triangle is another transversal line, so we can state that

m∠3 is = 57º for this is an alternate interior angle

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