Fill in the blanks to make the statements true.

In an isosceles right triangle, the number of lines of symmetry is ________.

Take a square piece of paper as shown in figure (1). Fold it along its diagonals as shown in figure (2). Again fold it as shown in figure (3). Imagine that you have cut off 3 pieces of the form of congruent isosceles right-angled triangles out of it as shown in figure 4.

On opening the piece of paper which of the following shapes will you get?

Which of the following 3-dimensional figures has the top, side and front as triangles?

Fill in the blanks to make the statements true.

Rhombus is a figure that has ______lines of symmetry and has a rotational symmetry of order _______.

Fill in the blanks to make the statements true.

__________ triangle is a figure that has a line of symmetry but lacks rotational symmetry.