A tetrahedron is a solid figure with four flat surfaces that are triangles. Each face of a tetrahedron is a triangle, making a total of four triangular faces in the shape.
They have flat surfaces
Slate breaks along smooth flat surfaces because of its foliated structure, consisting of fine-grained minerals aligned parallel to the direction of pressure during its formation. This alignment allows slate to easily split along these planes, resulting in the characteristic smooth surfaces when fractured.
Gliding joint
Gypsum has cleavage, which means it tends to break along flat surfaces.
1
6
A square base, and four triangular shaped sides equals five flat surfaces.
the flat surfaces
Only one. All squares are figures drawn entirely on a flat surface.
5 flat surfaces.
Flat surfaces: 6Curved surfaces: 0.
There are 5 flat surfaces.
There are 2 flat surfaces, both are circles.
It has 6 faces which are its flat surfaces.
5 Flat surfaces 4 flat surfaces (3 for the sides and 1 for the base).
2 flat and 1 curved