Simply assemble the triangles in to a rectangle.
An equilateral triangle has 3 lines of symmetry
A triangle.
An isosceles triangle has 1 lines of symmetry whereas a rhombus has 2; thus the rhombus has more lines of symmetry.
An equilateral triangle has 3 lines of symmetry
A triangle........I think
An equilateral triangle has 3 lines of symmetry
Equilateral triangle
A triangle.
An isosceles triangle has 1 lines of symmetry whereas a rhombus has 2; thus the rhombus has more lines of symmetry.
An equilateral triangle has 3 lines of symmetry
A triangle........I think
A general (scalene) triangle.
An equilateral triangle has exactly three lines of symmetry. It is the only shape that contains exactly three lines of symmetry.
Triangle * * * * * The only triangle with rotational symmetry of order 3 is an equilateral triangle and that has 3 lines of symmetry, not 0. The triskelion (the three legs) on the Isle of Man flag has rotational symmetry of order 3 but no lines of symmetry.
An equilateral triangle.
A triangle
An equilateral triangle.