Parallelograms are made up of two pair of parallel sides
An hexagon is made up out of 4 triangles
The Great Pyramids at Giza are, but the Meso-Americans were truncated.
27, but you will have to prove it.
An octagon is made up from six triangles each containing 180 degrees.
There are normally no parallelograms within an isosceles triangle unless you put them there yourself.
Parallelograms are made up of two pair of parallel sides
An isosceles triangle can be divided into 4 smaller, identical isosceles triangles. Each of these can then be divided into 4, and each of them ... So, the answer to the question is infinitely many.
An hexagon is made up out of 4 triangles
The Great Pyramids at Giza are, but the Meso-Americans were truncated.
27, but you will have to prove it.
Israel
square
An octagon is made up from six triangles each containing 180 degrees.
a geometric shape made up of 20 triangles. :)
geodesic
Assuming ALL 22 triangles are congruent, this would be a 22-gon, also known as an icositedigon