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Question (11)

QN0033237

A design has rotational symmetry at 90°, 180°, and 270°. How many equal positions make the design appear unchanged in one full turn?

(A) 2
(B) 3
(C) 4
(D) 5

Correct Answer: C

Explanation:

It matches at four positions in one complete rotation.

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Question (12)

QN0033238

Which activity from the chapter mainly uses carved wooden blocks to create repeated patterns?

(A) Paper folding
(B) Block printing
(C) Paper weaving
(D) Paper tearing

Correct Answer: B

Explanation:

Block printing uses carved wooden blocks.

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Question (13)

QN0033239

A student creates a pattern that has reflection symmetry but fails to match after any rotation except a full turn. Which statement is true?

(A) The pattern has only reflection symmetry.
(B) The pattern has quarter-turn symmetry.
(C) The pattern has half-turn symmetry.
(D) The pattern has both symmetries.

Correct Answer: A

Explanation:

Reflection symmetry does not always imply rotational symmetry.

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Question (14)

QN0033240

Which of the following is the best way to check whether a paper design has rotational symmetry?

(A) Measure its sides.
(B) Fold it once.
(C) Turn it about its centre.
(D) Count its corners.

Correct Answer: C

Explanation:

Rotational symmetry is verified by rotating the design.

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Question (15)

QN0033241

A decorative rangoli looks the same after every quarter turn and also has mirror lines. Which statement is correct?

(A) It has only rotational symmetry.
(B) It has only reflection symmetry.
(C) It has both rotational and reflection symmetry.
(D) It has no symmetry.

Correct Answer: C

Explanation:

It satisfies both types of symmetry.

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Question (16)

QN0033242

If a figure has exactly one vertical line of symmetry, which of the following changes will definitely destroy that symmetry?

(A) Colouring both halves identically
(B) Removing a small part from only one side
(C) Folding along the symmetry line
(D) Drawing equal shapes on both sides

Correct Answer: B

Explanation:

Unequal changes on one side break symmetry.

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Question (17)

QN0033243

A paper design has rotational symmetry of order 4. Through what smallest angle can it be turned to look the same?

(A) 45°
(B) 90°
(C) 180°
(D) 360°

Correct Answer: B

Explanation:

Smallest angle = 360° ÷ 4 = 90°.

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Question (18)

QN0033244

Which of the following best explains why symmetry is useful in making paper cutouts?

(A) It reduces the amount of drawing needed.
(B) It increases the paper size.
(C) It changes the colour automatically.
(D) It avoids using scissors.

Correct Answer: A

Explanation:

Symmetry allows only a part of the figure to be drawn.

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Question (19)

QN0033245

A student rotates a symmetrical design by 180° and notices that it matches the original, but it does not match at 90°. What type of rotational symmetry does the design have?

(A) Quarter-turn symmetry
(B) Half-turn symmetry
(C) No rotational symmetry
(D) Eight-fold symmetry

Correct Answer: B

Explanation:

Matching only after 180° indicates half-turn symmetry.

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Question (20)

QN0033246

Which of the following chapter activities combines mathematics with art by creating repeated symmetrical patterns?

(A) Long division
(B) Block printing
(C) Measuring capacity
(D) Reading clocks

Correct Answer: B

Explanation:

Block printing uses symmetry to create decorative repeated designs.

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Question (11)

A design has rotational symmetry at 90°, 180°, and 270°. How many equal positions make the design appear unchanged in one full turn?

Explanation:

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Question (12)

Which activity from the chapter mainly uses carved wooden blocks to create repeated patterns?

Explanation:

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Question (13)

A student creates a pattern that has reflection symmetry but fails to match after any rotation except a full turn. Which statement is true?

Explanation:

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Question (14)

Which of the following is the best way to check whether a paper design has rotational symmetry?

Explanation:

Link:

Question (15)

A decorative rangoli looks the same after every quarter turn and also has mirror lines. Which statement is correct?

Explanation:

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Question (16)

If a figure has exactly one vertical line of symmetry, which of the following changes will definitely destroy that symmetry?

Explanation:

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Question (17)

A paper design has rotational symmetry of order 4. Through what smallest angle can it be turned to look the same?

Explanation:

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Question (18)

Which of the following best explains why symmetry is useful in making paper cutouts?

Explanation:

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Question (19)

A student rotates a symmetrical design by 180° and notices that it matches the original, but it does not match at 90°. What type of rotational symmetry does the design have?

Explanation:

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Question (20)

Which of the following chapter activities combines mathematics with art by creating repeated symmetrical patterns?

Explanation:

Link:

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