Answer :
For the AAS theorem to apply which side of the triangle must be known option d. The non-included side.
What is AAS theorem?
In the case when there is two angles and there is nonincluded side for one triangle that should be congruent to two angles and a nonincluded side of a second triangle, so the triangles should be considered as the congruent.
therefore, For the AAS theorem to apply which side of the triangle must be known option d. The non-included side.
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