a scalene triangle
An upside-down triangle. It does not matter from which direction you view a triangle, it will still be a triangle.
a congruent triangle?
iscosoles triangle
This side is called the hypotenuse.
There is no specific name because there is no specific shape. The shape could have anything from 5 to 13 sides depending on the sizes and orientations of the triangle and square.
The straight line does not have a specific name.
a triangle
A triangle.
Triangle A is the only possible name from the information provided.
there is no specific answer to that
Another name is its correct name: an isosceles triangle.
right triangle
irregular triangle
Tri means three, and there are three angles to a triangle so that's how the triangle got its name.
Triangle
Equilateral triangle, regular triangle.