Mathematics
Mathematics, 24.07.2019 07:30, sevanah5506

Which best explains whether or not all isosceles triangles are similar? 1) all isosceles triangles are similar. two angles within each triangle are always congruent. 2) all isosceles triangles are similar. the triangle sum theorem states that the sum of the angles in a triangle is 180°. therefore, the third angle can always be determined. 3) 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. 4) all isosceles triangles are not similar. given only the vertex angle of an isosceles triangle, there is not enough information to determine the measures of the base angles. therefore, it is not possible to determine if the base angles of one isosceles triangle are congruent to the base angles of another.

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