Respuesta :
The pair of congruent angles within one triangle is not necessarily congruent to the pair of congruent angles within the other triangle.
What is an isosceles triangle?
An isosceles triangle is one in which the two sides of the triangle are equal. The base angles of an isosceles triangle are usually equal.
Hence, the statement that explains whether or not all isosceles triangles are similar is; "All isosceles triangles are not similar. The pair of congruent angles within one triangle is not necessarily congruent to the pair of congruent angles within the other triangle."
Learn more about isosceles triangle:https://brainly.com/question/2456591?
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