Nothing. It is always possible to make a duplicate triangle.
It depends on the size of the rock. If you are trying to make a triangle shape with one side being pointy, go to some asphalt or concrete and rub on both sides until its sharp
A Rock
78 42 are, as far as I can make out, two numbers. They do not make a triangle.78 42 are, as far as I can make out, two numbers. They do not make a triangle.78 42 are, as far as I can make out, two numbers. They do not make a triangle.78 42 are, as far as I can make out, two numbers. They do not make a triangle.
A trapezoid and a triangle can make a triangle or another trapezoid, among others.
They make four triangles, not a triangle.
diamond triangle
A triangle
no coliner points donot make triangle
No because a trapezoid has 4 sides and a triangle has three if a trapezoid had three then it would be a triangle. If you had 3 trapezoids you could make a triangle!
a quadrilateral
you can make a triangle, triangle means devil ? ▲ haha