Final answer:
If angle 1 measures 60 degrees and is an alternate interior angle to angle 2, created by a transversal intersecting parallel supports of a bridge, then angle 2 will also measure 60 degrees due to the Alternate Interior Angles Theorem.
Step-by-step explanation:
The question provided seems to be referring to a geometry problem involving parallel lines and the angles created when a transversal intersects them. When Arturo designs a bridge with parallel supports for the top and bottom beam, the angles related to those parallel lines and a transversal have specific relationships. If m ∠ 1 equals 60 degrees, and the supports are parallel, then m ∠ 2 would also be 60 degrees by the Alternate Interior Angles Theorem, which states that alternate interior angles are equal when two parallel lines are cut by a transversal. This is under the assumption that angle 1 and angle 2 are positioned as alternate interior angles.