NNAT Mirror Images and Rotations 3 — Questions and Answers
Question 1: A rectangle is taller than it is wide. After a 90° clockwise rotation, what does it look like?
- Wider than it is tall (Correct answer)
- Still taller than wide
- A square
- Taller but narrower
Correct answer: Wider than it is tall
Rotating 90° swaps the height and width, making the previously tall rectangle wider than tall.
Question 2: Which letter looks exactly the same when reflected across a vertical axis?
- A (Correct answer)
- R
- G
- J
Correct answer: A
The letter 'A' has a vertical line of symmetry, so its mirror image looks identical.
Question 3: A shape has been rotated. The top of the shape now faces left. Which rotation was most likely applied?
- 90° counterclockwise (Correct answer)
- 90° clockwise
- 180°
- 270° counterclockwise
Correct answer: 90° counterclockwise
If the top now faces left, the shape was rotated 90° counterclockwise (turning it so its top swings to the left).
Question 4: Two mirror images of an asymmetric shape are placed side by side. Which statement is true?
- They cannot be rotated to match each other (Correct answer)
- They are identical
- One is larger than the other
- They share the same orientation
Correct answer: They cannot be rotated to match each other
Mirror images of asymmetric shapes are non-superimposable; no rotation can make them match.
Question 5: A clock face is reflected in a vertical mirror. What time does the reflection show if the original shows 3:00?
- 9:00 (Correct answer)
- 3:00
- 6:00
- 12:00
Correct answer: 9:00
Reflecting the clock face swaps left and right, moving the hour hand from the 3 position to the 9 position.
Question 6: A shape is rotated 45°. After four such rotations in the same direction, what is the total rotation?
- 180° (Correct answer)
- 90°
- 270°
- 360°
Correct answer: 180°
Four rotations of 45° each total 4 × 45° = 180°.
Question 7: An image of a right hand is reflected across a vertical line. What does the reflection look like?
- A left hand (Correct answer)
- A right hand
- A fist
- An upside-down right hand
Correct answer: A left hand
Reflecting a right hand across a vertical axis produces a left hand because handedness is reversed.
NNAT Mirror Images and Rotations 3
A rectangle is taller than it is wide.
After a 90° clockwise rotation, what does it look like?