Image Analysis Questions

How many triangles are there?

How many triangles are there in the question figure?

If a mirror is placed on the line MN, which of the answer figures is the right image of the given figure?

If a mirror is placed on the line MN, then which is the right image of the given figure?

If a mirror is placed on the line MN, then which of the answer figures is the right image of the given figure?

Choose the right image when mirror is placed on the line AB?

If a mirror is placed on the line MN, then which is the right image of the given figure?

A piece of paper is folded and cut as shown below in the question figures. From the given answer figures, indicate how it will appear when opened.