No.
Both have at least one hexagonal face (base). Both have six faces that are topologically equivalent (either rectangles, or triangles).
they both have straight edges
Both are different triangles.
Both of their bases are rectangles, and they are both 3D.
There are both golden triangles and golden rectangles. In order to be considered golden the ratio must be the same as the sum of the longest side to the other two sides.
they are both triangles (3 sides)
No because they are both different types of triangles
Because they are both triangles and they are both 3 dimensional!
Thy both have three angles.
An equilateral triangle and an isosceles triangle would both have lines of symmetry that would split it into two triangles.
Isosceles.
Both triangles have 3 sides which add up to 180 degrees. In fact, all triangles do.