there is the Equilateral Triangle which all sides are equal.
there is the Isosceles Triangle where only two sides are equal.
there is the Scalene Triangle where no sides are equal.
can help you:
http://www.easycalculation.com/trigonometry/triangles-sides.php
Many different types, but mostly equilateral triangles.
you can make 76 different triangles on a 3x3 grid
All right-angles triangles. That is triangles that contain one angle at 90 degrees.
One way is they both are triangles and have 3 sides.
no
Many different types, but mostly equilateral triangles.
depends on what size triangles and what kind of triangles?
They can be any kind of triangles.
a pyramid can use any triangles possible.
Right-Angle triangles
scalene triangles
size
None because all triangles have 3 sides
You would get two scalene triangles.
you can make 76 different triangles on a 3x3 grid
No because they are different types of triangles
There are 3 triangles in a pentagon