rhombus
cube
1:2
A cuboid.
Differences: Squares have 4 sides / equilateral triangles have 3 sides. Squares have 90 degree angles / equilateral triangles have 60 degree angles. Squares have 2 diagonals / equilateral triangles have none Similarities: All sides of the shape are congruent All angles of the shape are congruent
Draw one square. Join the midpoint of each side to the midpoint of the adjacent sides. The resulting figure meets the requirements.
cube
triangular prism
Well, honey, with 2 squares and 2 triangles, you can make a lovely little house shape. Just slap those squares together for the base, and plop those triangles on top for the roof. Voila! You've got yourself a cute little geometric abode.
A triangular prism. :)
1:2
A triangular prism would fit the given description
A hexagon.
A square is a 2 dimensional shape, but it can be divided into 2 or more triangles, or more smaller squares, or hexagons and triangles, or octagons and triangles, or really any rectilinear figure and triangles. If you mean what two dimensional shapes can compromise the surface of a cube, or rectangular prism, then you want squares. if you mean what 1 dimensional figures can make the perimeter of a square, then you want lines (straight lines).
You can't.
There are 2 triangles in a square so the ratio to square and triangle is 2 to 1
See the link under related links below that says "8 Lines 2 Squares 4 Triangles"
The simplest pattern is 2n+1, so the 16th figure will have 33 triangles. Of course, if you are creating new triangles and also keeping the old triangles, this would be different.