Many shapes with three or more corners satisfy the condition.
All triangles have 3 corners but not such that they are all equal. One which does is the equilateral triangle.
A square and rectangle each have four corners, and by definition also have at least 3 equal corners. A trapezoid and parallelogram each has four corners but have pairs of obtuse and acute angles and so cannot satisfy the condition.
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An equilateral triangle.
An equilateral triangle.
An Equilateral Triangle has 3 equal sides and answers.
an equal sided triangle
An equilateral triangle.
an equilateral triangle
A regular shape has 3 or more sides of equal lengths and equal interior angles
2 equilateral triangles
equilateral traingle
An equilateral triangle has 3 equal sides and 3 equal interior angles (of 60o.)
An equilateral triangle