You Cant. Because A Hexagon Is A Six Sided Shape. And An Equilateral Triangle Is Equal. So You Can Because Everything (As In Sides And Angles Will Be Congruent)
No but they will make a hexagon
First make a regular hexagon. Then take any one triangle and slide it through two heights so that it's base is on what was the opposite side. You will have an irregular, concave hexagon, shaped somewhat like an arrowhead.
Six equilateral triangles.
Join them together
you can't
It's easy all you have to do is make a heart shape
No but they will make a hexagon
First make a regular hexagon. Then take any one triangle and slide it through two heights so that it's base is on what was the opposite side. You will have an irregular, concave hexagon, shaped somewhat like an arrowhead.
Six equilateral triangles.
Join them together
you can't
Two triangles can but its an irregular shape
Put one angle of each triangle at the center of the hexagon.
You take four regular triangles and make the all on the same center point and make them share one or two of there side with the triangle next to it until you get something that looks like a pac-man with a big mouth.
Infinitely many. When you have one equilateral triangle, you can join up the midpoints of its sides to make into 4 more equilateral triangles. And then each one of those can be split up and so on.
Arrange the triangles to make a regular hexagon. Then move one of the triangles so that its side lies alongside the side of one of its former neighbours.
Put four equilateral triangles so that each one of them has a vertex at a single point and the triangles abut one another. The shape will be 4/6 (= 2/3) of a regular hexagon.