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Which properties belong to all isosceles triangles

User Vytaute
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Two equal sides with two angles measuring LESS THAN 90°, and two equal angles. All isosceles triangles have two equal sides and two equal angles that are less than 90°.
User Damien Carol
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The base angles are congruent.

The two sides opposite the base angles are congruent.

The bisector of the vertex angle is the perpendicular bisector of the base.

e2020

User Uzma
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