An EQUILATERAL Triangle.
Two lines of symmetry is ISOSCELES Triangle
No lines of symmetyry is SCALENE Triangle.
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No, all regular poygons are symmetrical. Ones with an odd number of sides have rotational symmetry.
Eqiilateral trangle i
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An equilateral triangle- a triangle with 3 equal sides, so the triangle would have 3 congruent angles as well.A trick to remember this: the word equal is sort of in the word equilateral.
There are infinitely many such shapes:Take any odd-sided regular polygonMove one vertex away from the side opposite it in a perpendicular direction any distance you like.The resulting shape has one line of symmetry (from the vertex moved to the centre of the opposite side) and no rotational symmetry.Done to an equilateral triangle (a regular "3-agon") this creates an isosceles triangle.