Final answer:Given that AB = AC in triangle AABC, and that an isosceles triangle is defined as one in which two sides are of equal length, we can use deductive reasoning to conclude that AABC is an isosceles triangle. Other conclusions named in the question cannot be derived from theprovided statements.Explanation:By considering the given statements, it is clear that the sides AB and AC oftriangleAABC are equal. According to the definition of an isosceles triangle, if two sides of a triangle are congruent or equal, then the triangle is referred to as an isosceles triangle. Thus, the fact that AB = AC suggests that triangle ABC is anisosceles triangle. Hence, we can employdeductive reasoningto arrive at the conclusion that AABC is an isosceles triangle (B), in line with the second statement in the question. The other conclusions mentioned (A, C, and D) can't be deduced from the givenstatements.Learn more about Geometry here:brainly.com/question/31408211#SPJ2...

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