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Question (21)

QN0015767

Which statement is always true for perpendicular lines?

(A) They form two angles
(B) They form four right angles
(C) They never intersect
(D) They form only acute angles

Correct Answer: B

Explanation:

Perpendicular lines form four right angles.

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Question (22)

QN0015768

If two lines form angles of 88°, 92°, 88°, and 92°, the lines are:

(A) Perpendicular
(B) Parallel
(C) Not perpendicular
(D) Coincident

Correct Answer: C

Explanation:

Perpendicular lines must form four 90° angles.

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Question (23)

QN0015769

The angle between the minute hand and hour hand at 3 o'clock is:

(A) 45°
(B) 60°
(C) 90°
(D) 180°

Correct Answer: C

Explanation:

The hands are at right angles.

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Question (24)

QN0015770

In paper folding, a vertical fold crossing a horizontal fold creates angles of:

(A) 45°
(B) 60°
(C) 90°
(D) 120°

Correct Answer: C

Explanation:

Horizontal and vertical folds are perpendicular.

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Question (25)

QN0015771

If line AB is perpendicular to line CD, then ∠ between AB and CD equals:

(A) 90°
(B) 180°
(C) 45°
(D) 360°

Correct Answer: A

Explanation:

Perpendicular lines meet at 90°.

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Question (26)

QN0015772

A carpenter checks whether a table corner is square by ensuring the sides are:

(A) Parallel
(B) Perpendicular
(C) Curved
(D) Equal in length only

Correct Answer: B

Explanation:

A square corner is formed when adjacent sides meet at 90°, i.e., perpendicular.

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Question (27)

QN0015773

Which geometric instrument helps identify right angles accurately?

(A) Compass only
(B) Divider
(C) Set square
(D) Protractor only

Correct Answer: C

Explanation:

A set square is used to construct and verify right angles.

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Question (28)

QN0015774

A line perpendicular to a horizontal line is always:

(A) Horizontal
(B) Vertical
(C) Parallel
(D) Slanting at 45°

Correct Answer: B

Explanation:

A line at 90° to a horizontal line is vertical.

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Question (29)

QN0015775

If line p ⊥ line q and line q ⊥ line r, then lines p and r are:

(A) Perpendicular
(B) Parallel
(C) Coincident
(D) Intersecting at 45°

Correct Answer: B

Explanation:

Two lines perpendicular to the same line are parallel.

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Question (30)

QN0015776

If one side of a notebook is perpendicular to another adjacent side, the angle between them is:

(A) 60°
(B) 75°
(C) 90°
(D) 120°

Correct Answer: C

Explanation:

Perpendicular lines always form a right angle of 90°.

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Question (21)

Which statement is always true for perpendicular lines?

Explanation:

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Question (22)

If two lines form angles of 88°, 92°, 88°, and 92°, the lines are:

Explanation:

Link:

Question (23)

The angle between the minute hand and hour hand at 3 o'clock is:

Explanation:

Link:

Question (24)

In paper folding, a vertical fold crossing a horizontal fold creates angles of:

Explanation:

Link:

Question (25)

If line AB is perpendicular to line CD, then ∠ between AB and CD equals:

Explanation:

Link:

Question (26)

A carpenter checks whether a table corner is square by ensuring the sides are:

Explanation:

Link:

Question (27)

Which geometric instrument helps identify right angles accurately?

Explanation:

Link:

Question (28)

A line perpendicular to a horizontal line is always:

Explanation:

Link:

Question (29)

If line p ⊥ line q and line q ⊥ line r, then lines p and r are:

Explanation:

Link:

Question (30)

If one side of a notebook is perpendicular to another adjacent side, the angle between them is:

Explanation:

Link:

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