Two squares
Two triangles
Triangles (four of) and a square.One square as base and four triangles as sides.
Four equilateral triangles make up another equilateral triangle.
3 triangles make up a hexagon.
There are an infinite number of options. Even sticking with polygons with sides of the same measure, a hexagon can be made from 6 equilateral triangles, or 4 eq triangles and a 60 degree rhombus, or 2 eq triangles and 2 60-deg rhombi, or 3 60-deg rhombi. Each of the equilateral triangle could be made from smaller shapes. Eg four equilateral mini-triangles to make 1 triangle. Or 2 mini-triangles and 1 mini-rhombus or 2 60-deg mini-rhombi. And then each of those mini triangles could be made up of smaller micro-shapes. And so on ...
Any where the angles of 3 or more of the shape that meet at a point can add up to 360°, namely an equilateral triangle, a square and a hexagon.
Two trapezoids can make up a hexagon.
well that is easy its 3 rhombuses
A hexagon and a rectangle.
Hexagon, heptagon, octagon, nonagon all have more sides than a pentagon
A square can be drawn with four lines.
A 6 sided hexagon has 6 angles that add up to 720 degrees
You start creating a concave hexagon from four triangles by placing the smallest triangle in the middle to serve as a base for the other three. Line up the bases on each triangle with the sides of the smallest one to end up with six sides forming a concave hexagon.
Triangles (four of) and a square.One square as base and four triangles as sides.
Four equilateral triangles make up another equilateral triangle.
3 triangles make up a hexagon.
The answer depends on the shapes and sizes of the triangles. I can make a big triangle, a quadrilateral, pentagon, hexagon, etc up to 12 sides.
Triangle Quadrilateral Pentagon Hexagon Heptagon Octagon Nonagon