Yes.
It depends on the dimensions of the triangle, some have 0, but no triangle will ever have more than 3 lines of symmetry.
yes it has millions it can have a line of symetry from any angle
They have the same amount they both have four sides
All I want to know is Can a quadrilateral have more than 4 sides, I mean come on, it's not like i'm asking something that is impossible to answer.
No, a vertice means a point where two or more lines come to a point. And a quadrilateral has four corners/vertices, it cannot have more than four because it only has four sides.
Yes
That's going to be a tough assignment. There's no chance that you can ever succeed, since there's no such thing as a quadrilateral triangle.
A chevron (arrowhead) is a quadrilateral with one angle of more than 1800.
Trapezoid
You can construct any polygon with more than 4 sides such that two sides are parallel. A quadrilateral in which two lines are parallel is called a trapezoid.
A parallelogram, other than a rhombus or rectangle.