Answer:
no
Explanation:
You want to know if all isosceles triangles have 3 congruent sides.
Isosceles triangle
An isosceles triangle has two (2) congruent sides. The third side may or may not be congruent to those two. If it is, the triangle is usually referred to as an equilateral triangle.
All equilateral triangles are isosceles, but not all isosceles triangles are equilateral.
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