An irregular* pentagon *means that the sides are not all the same length
Cylinder
because you can't just change one of the angles or one of the side lengths without breaking the triangle. All the angles and sides re-inforce each other. Image a square made out of sticks that are attached loosely at the corners. You can squish two of the corners together to make a diamond shape, and you haven't changed the length of the sides. But if you have a triangle made out of sticks, you can't change it's shape without destroying it.
The most rigid shape that you can make out of straight pieces is the triangle.
No. Hexagons and squares will each tessellate by themselves but one can not make a tessellation out of hexagons and squares combined. However, if you add in a third shape, the triangle, one can make a tessellation.
triangle , square , rectangle
A triangle. If you made a diamond or a square (which is really just a type of diamond) out of bendy straws, you could bend the them at their points. However, if you made a triangle out of straws, you couldn't bend it at its points. Therefore, a triangle is the most stable.
There is no shape that is made up 3 sides that is not a triangle. Any shape that is made up of 3 sides is classified as a triangle no matter what shape or size it is.
A square, a cube, a diamond, a equilateral triangle, a triangular based pyramid made of equilateral triangles...
It will be a polygon, although the exact nature of the resulting polygon will depend on the original polygon, its dimensions relative to the triangle, whether or not the two shapes can overlap and so on.
A right angle triangle or an isosceles triangle.
Cylinder
because you can't just change one of the angles or one of the side lengths without breaking the triangle. All the angles and sides re-inforce each other. Image a square made out of sticks that are attached loosely at the corners. You can squish two of the corners together to make a diamond shape, and you haven't changed the length of the sides. But if you have a triangle made out of sticks, you can't change it's shape without destroying it.
The triangle is a percussion instrument and is in the shape of a triangle and is made from metal- this instrument is normally played with a beater to make diferent sounds which start and finish before the next sound is made. :)
a square
The most rigid shape that you can make out of straight pieces is the triangle.
The microscope doesn't have a cirtain shape but it is made up of a veriaty of shapes. the tube you look into is a cylinder shape the base is a square/rectangular shape and the platform is a square.
No. Hexagons and squares will each tessellate by themselves but one can not make a tessellation out of hexagons and squares combined. However, if you add in a third shape, the triangle, one can make a tessellation.