In general, usually not. It is possible for a right triangle to have 2 congruent sides; this makes it an isoceles right triangle. This shape is often seen in architecture.
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A scalene triangle
An isosceles triangle.
It is an isosceles triangle
Isosceles Triangle Isosceles TriangleIsosceles triangles have at least 2 congruent sides, and equilateral triangles have all 3 sides equal. A scalene triangle has no congruent sides or angles. All triangles have 180 degrees total.An equilateral triangle has three congruent sides and an isosceles triangle has two congruent sides.
An isosceles triangle has 2 equal sides, a equadrilateral triangle has all equal sides, and a scalene has no equal sides