No. However, just the right size of trapezoid can be split into three equilateral triangles.
Trapezoid
If the triangle and hexagon are equilateral, then the trapezoid is not like the others because all of its angles are not equal. A rectangle will have 4 equal right angles. An equilateral triangle will have 3 equal acute 60 degree angles. An equilateral hexagon will have 6 equal obtuse 120 degreeangles.
Three (if it happens to also be an equilateral triangle).If it's isosceles but not equilateral, it has only one line of symmetry.
A triangle cannot be formed by any number of trapezoids. Every time a trapezoid is stretched across one side of a triangle, a smaller triangle similar to the first is formed by the part not covered by the trapezoid. Unless... the triangle was equilateral and the trapezoids were isoceles. You could fill the triangle with 3 trapezoids as follows: Use the longer 'bottom' edge of each trapezoid and the 'left' edge of the next trapezoid to make up the edge of the triangle. The shorter 'top' edge of the trapezoids touch the 'right' edge of the next trapezoid in the center of the triangle.
No. A trapezoid is not a triangle at all
no
An equilateral trapezium.
Three equilateral triangles.
No. However, just the right size of trapezoid can be split into three equilateral triangles.
Trapezoid
If the triangle and hexagon are equilateral, then the trapezoid is not like the others because all of its angles are not equal. A rectangle will have 4 equal right angles. An equilateral triangle will have 3 equal acute 60 degree angles. An equilateral hexagon will have 6 equal obtuse 120 degreeangles.
Three (if it happens to also be an equilateral triangle).If it's isosceles but not equilateral, it has only one line of symmetry.
parallelogram
It would depend on the triangles, but assuming they were equilateral or isosceles, a trapezoid if alternated in a line.
Any quadrilateral qualifies as long as it is neither an equilateral trapezoid nor a rhombus. (That includes not a square.)
A triangle cannot be formed by any number of trapezoids. Every time a trapezoid is stretched across one side of a triangle, a smaller triangle similar to the first is formed by the part not covered by the trapezoid. Unless... the triangle was equilateral and the trapezoids were isoceles. You could fill the triangle with 3 trapezoids as follows: Use the longer 'bottom' edge of each trapezoid and the 'left' edge of the next trapezoid to make up the edge of the triangle. The shorter 'top' edge of the trapezoids touch the 'right' edge of the next trapezoid in the center of the triangle.