Yes.
The only convex polygon that is rigid is a triangle.
triangle , square , rectangle
It is a rigid 2-dimensional shape.
The most rigid shape that you can make out of straight pieces is the triangle.
No. A triangle is the only rigid polygon.
Yes.
The triangle is the most rigid polygon because amongst the other polygons, it has the least amount of sides.
The only convex polygon that is rigid is a triangle.
triangle , square , rectangle
It's The Triangle
It is a rigid 2-dimensional shape.
The most rigid shape that you can make out of straight pieces is the triangle.
2D - the triangle 3D - the tetrahedron (i.e. it has a triangle on each side and there are 4 sides.
No. The only rigid polygon is a triangle. Any other needs diagonals - which break up the polygon into triangles.
A triangle has 3 vertices, a rhombus has 4. All sides of a rhombus are of equal length, they need not be for a triangle. A triangle is a rigid shape, a rhombus is not.
Yes. Given three lengths, e.g. 6 cm, 7 cm, 8 cm, there is only one triangle that can be made - hence SSS being a proof of congruence. This makes it rigid - it can't be transformed nto another triangle, so it can't move. Compare this to a quadrilateral; it isn't rigid. A square can "slide" into a rhombus, a rectangle into a parallelogram. For evidence, cout some card strips and use paper fasteners to hold the ends together. A triangle so constructed is rigid, a quadrilateral can be distorted.