IGDTUW 2026 — Reasoning PYQ
IGDTUW | Reasoning | 2026A figure is rotated by 180° clockwise about its center. This transformation is called:
Choose the correct answer:
- A.
Reflection
- B.
Translation
- C.
Central Rotation
(Correct Answer) - D.
Enlargement
Central Rotation
Explanation
Detailed Explanation:
Geometric transformations describe how a shape moves or changes in a coordinate plane. Let's look at the definition of each given term to understand why option (c) is correct:
Central Rotation: A transformation where a figure turns around a fixed point (called the center of rotation) by a specific angle and direction. Since the problem explicitly states the figure is turned by 180° clockwise about its center, it falls directly under central rotation.
Reflection: A transformation that flips a figure over a line, creating a mirror image.
Translation: A transformation that slides every point of a figure the same distance in the same direction without turning or resizing it.
Enlargement (Dilation): A transformation that changes the size of a figure (stretching or shrinking it) while maintaining its original proportions and shape.
Therefore, spinning an object around its internal midpoint is mathematically referred to as a Central Rotation.
Explanation
Detailed Explanation:
Geometric transformations describe how a shape moves or changes in a coordinate plane. Let's look at the definition of each given term to understand why option (c) is correct:
Central Rotation: A transformation where a figure turns around a fixed point (called the center of rotation) by a specific angle and direction. Since the problem explicitly states the figure is turned by 180° clockwise about its center, it falls directly under central rotation.
Reflection: A transformation that flips a figure over a line, creating a mirror image.
Translation: A transformation that slides every point of a figure the same distance in the same direction without turning or resizing it.
Enlargement (Dilation): A transformation that changes the size of a figure (stretching or shrinking it) while maintaining its original proportions and shape.
Therefore, spinning an object around its internal midpoint is mathematically referred to as a Central Rotation.