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Question (11)

QN0015717

If ∠A and ∠B form a linear pair and ∠A = 101°, then ∠B =

(A) 79°
(B) 81°
(C) 89°
(D) 99°

Correct Answer: A

Explanation:

180° − 101° = 79°.

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Question (12)

QN0015718

When two lines intersect and all four angles are equal, each angle measures:

(A) 45°
(B) 60°
(C) 90°
(D) 180°

Correct Answer: C

Explanation:

Four equal angles around a point formed by intersecting lines are right angles.

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Question (13)

QN0015719

Two lines that intersect at right angles are called:

(A) Parallel lines
(B) Skew lines
(C) Perpendicular lines
(D) Curved lines

Correct Answer: C

Explanation:

Perpendicular lines intersect at 90°.

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Question (14)

QN0015720

Which pair of classroom objects most likely represents parallel lines?

(A) Adjacent edges of a notebook
(B) Two sides of a ruler opposite each other
(C) Hands of a clock at 3 o’clock
(D) Letter X

Correct Answer: B

Explanation:

Opposite sides of a ruler remain equidistant.

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Question (15)

QN0015721

Parallel lines are lines that:

(A) Meet at right angles
(B) Meet after extension
(C) Never meet however far extended in the same plane
(D) Form four equal angles

Correct Answer: C

Explanation:

Parallel lines never intersect in the same plane.

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Question (16)

QN0015722

Which condition is necessary for lines to be parallel?

(A) They must lie in the same plane
(B) They must be equal in length
(C) They must be vertical
(D) They must be horizontal

Correct Answer: A

Explanation:

Parallel lines must be coplanar.

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Question (17)

QN0015723

Opposite edges of a square sheet of paper are:

(A) Perpendicular
(B) Parallel
(C) Intersecting
(D) Curved

Correct Answer: B

Explanation:

Opposite sides of a square are parallel.

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Question (18)

QN0015724

Adjacent edges of a square sheet are:

(A) Parallel
(B) Intersecting at 45°
(C) Perpendicular
(D) Never meet

Correct Answer: C

Explanation:

Adjacent sides meet at 90°.

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Question (19)

QN0015725

After folding a square sheet horizontally once, the total number of horizontal parallel lines visible is:

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

Correct Answer: B

Explanation:

Two edges and one fold line make three parallel lines.

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Question (20)

QN0015726

After making two horizontal folds in a square sheet, the number of parallel horizontal lines visible becomes:

(A) 3
(B) 4
(C) 5
(D) 7

Correct Answer: C

Explanation:

Two edges and three fold lines give five parallel lines.

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Question (11)

If ∠A and ∠B form a linear pair and ∠A = 101°, then ∠B =

Explanation:

Link:

Question (12)

When two lines intersect and all four angles are equal, each angle measures:

Explanation:

Link:

Question (13)

Two lines that intersect at right angles are called:

Explanation:

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Question (14)

Which pair of classroom objects most likely represents parallel lines?

Explanation:

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Question (15)

Parallel lines are lines that:

Explanation:

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Question (16)

Which condition is necessary for lines to be parallel?

Explanation:

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Question (17)

Opposite edges of a square sheet of paper are:

Explanation:

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Question (18)

Adjacent edges of a square sheet are:

Explanation:

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Question (19)

After folding a square sheet horizontally once, the total number of horizontal parallel lines visible is:

Explanation:

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Question (20)

After making two horizontal folds in a square sheet, the number of parallel horizontal lines visible becomes:

Explanation:

Link:

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