Have a look around you?
All isosceles triangles are not equilateral triangles
18 triangles can be found in a 20-agon
All isosceles triangles are not equilateral triangles
No
Yes.
8
None!!!! However, if the square is intersected by two diagonal lines, then eight(8) internal triangles can be found.
No...
true
your mom is the right triangles
Some triangles can be classified by only term, and some triangles fall into two overlapping, non-mutually-exclusive categories.
Six equilateral triangles are found in a regular 6 sided hexagon