Geometry

Question Analysis:
Focuses on rotational symmetry, a key concept linked to rotations.
Tests whether the student can recognize shapes that match their original form after being rotated.

Key Concept Explanation:
A shape has rotational symmetry if it looks the same after a rotation less than 360°.
Order of rotational symmetry = number of times it matches in 360°.
A square:
Matches at 90°, 180°, 270°, 360° ⇒ order = 4.

Step-by-Step Solution:
Square: matches at every 90° → order = 4 ⇒ ✅ correct.
Scalene triangle: no match until 360° ⇒ order = 1.
Parallelogram: only at 180° and 360° ⇒ order = 2.
Trapezoid: no match until 360° ⇒ order = 1.
✅ Correct Answer: B

Option Analysis:
A. ❌ Only matches at 360° (no symmetry).
✅ B. Perfect rotational symm...