Symmetry and geometric transformations

Suppose a square \( ABCD \) rotates about its vertex \( B \). Which of the given pictures shows the square \( A'B'C'D' \) that is the image of the square \( ABCD \) rotated \( 180 \) degrees?

An equilateral triangle \( ABC \) rotates \( 120^{\circ} \) clockwise about the vertex \( A \). Which of the pictures shows the triangle \( A'B'C' \) that is the image of the rotated triangle \( ABC \)?

An equilateral triangle \( ABC \) rotates \( 90^{\circ} \) anticlockwise about the point \( O(4;1) \). Which of the pictures shows the triangle \( A'B'C' \) that is the image of the rotated triangle \( ABC \)?

Let a rectangle \( ABCD \) be translated by vector \( \overrightarrow{SB} \), where \( S \) is the midpoint of the rectangle. Which of the following pictures shows correctly the image \( A'B'C'D' \) of the rectangle \( ABCD \) in described translation?