Lines and Angles MCQs with answers

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Q. When the sum of the measures of two angles is 90°, the angles are called
  • (A) supplementary angles
  • (B) complementary angles
  • (C) adjacent angles
  • (D) vertically opposite angles
💬 Discuss
✅ Correct Answer: (B) complementary angles
Q. The sum of the measures of two complementary angles is
  • (A) 180°
  • (B) 60°
  • (C) 45°
  • (D) 90°
💬 Discuss
✅ Correct Answer: (D) 90°
Q. The measure of the complement of the angle 30° is
  • (A) 30°
  • (B) 16°
  • (C) 60°
  • (D) 160°
💬 Discuss
✅ Correct Answer: (C) 60°
Q. Which of the following statements is true?
  • (A) Two acute angles can be complementary to each other
  • (B) Two obtuse angles can be complementary to each other
  • (C) Two right angles can be complementary to each other
  • (D) One obtuse angle and one acute angle can be complementary to each other
💬 Discuss
✅ Correct Answer: (A) Two acute angles can be complementary to each other
Q. The measure of the complement of the angle 46° is
  • (A) 90°
  • (B) 44°
  • (C) 16°
  • (D) 136°
💬 Discuss
✅ Correct Answer: (B) 44°
Q. What is the measure of the complement of the angle 80°?
  • (A) 10°
  • (B) 100°
  • (C) 36°
  • (D) 20°
💬 Discuss
✅ Correct Answer: (A) 10°
Q. Which pair of the following angles are complementary?
  • (A) a
  • (B) b
  • (C) c
  • (D) d
💬 Discuss
✅ Correct Answer: (A) a
Q. The measure of the angle which is equal to its complement is
  • (A) 30°
  • (B) 60°
  • (C) 46°
  • (D) 90°
💬 Discuss
✅ Correct Answer: (C) 46°
Q. Which of the following pairs of angles is not a pair of complementary angles?
  • (A) 60°, 30°
  • (B) 66°, 34°
  • (C) 0°, 90°
  • (D) 160°, 30°
💬 Discuss
✅ Correct Answer: (D) 160°, 30°
Q. What is the measure of the complement of the angle 90°?
  • (A) 90°
  • (B) 0°
  • (C) 180°
  • (D) 45°
💬 Discuss
✅ Correct Answer: (B) 0°
Q. When the sum of the measures of two angles is 180°, the angles are called
  • (A) adjacent angles
  • (B) complementary angles
  • (C) vertically opposite angles
  • (D) supplementary angles
💬 Discuss
✅ Correct Answer: (D) supplementary angles
Q. The sum of the measures of two supplementary angles is
  • (A) 90°
  • (B) 180°
  • (C) 360°
  • (D) none of these
💬 Discuss
✅ Correct Answer: (B) 180°
Q. The measure of the supplement of the angle 120° is
  • (A) 30°
  • (B) 45°
  • (C) 60°
  • (D) 90°
💬 Discuss
✅ Correct Answer: (C) 60°
Q. Which of the following statements is true?
  • (A) Two acute angles can be supplementary.
  • (B) Two right angles can be supplementary.
  • (C) Two obtuse angles can be supplementary.
  • (D) One obtuse angle and one acute angle cannot be supplementary
💬 Discuss
✅ Correct Answer: (B) Two right angles can be supplementary.
Q. The measure of the supplement of the angle 90° is
  • (A) 45°
  • (B) 60°
  • (C) 30°
  • (D) 90°
💬 Discuss
✅ Correct Answer: (D) 90°
Q. The measure of the angle which is equal to its supplement is
  • (A) 30°
  • (B) 45°
  • (C) 90°
  • (D) 60°
💬 Discuss
✅ Correct Answer: (C) 90°
Q. Which of the following pairs of angles is not a pair of supplementary angles?
  • (A) 90°, 90°
  • (B) 32°, 58°
  • (C) 0°, 180°
  • (D) 76°, 104°
💬 Discuss
✅ Correct Answer: (B) 32°, 58°
Q. What is the measure of the supplement of the angle 0°?
  • (A) 45°
  • (B) 90°
  • (C) 120°
  • (D) 180°
💬 Discuss
✅ Correct Answer: (D) 180°
Q. The measure of the supplement of the angle 179° is
  • (A) 1°
  • (B) 2°
  • (C) 3°
  • (D) 4°
💬 Discuss
✅ Correct Answer: (A) 1°
Q. Which of the following statements is true?
  • (A) Two adjacent angles can be complementary.
  • (B) Two adjacent angles cannot be supplementary
  • (C) An acute angle cannot be adjacent to an obtuse angles.
  • (D) Two right angles cannot be adjacent angles
💬 Discuss
✅ Correct Answer: (A) Two adjacent angles can be complementary.
Q. The angles in a linear pair are
  • (A) complementary
  • (B) supplementary
  • (C) not adjacent angles
  • (D) vertically opposite angles
💬 Discuss
✅ Correct Answer: (B) supplementary
Q. Which of the following statements is true?
  • (A) Two acute angles can form a linear pair.
  • (B) Two obtuse angles can form a linear pair
  • (C) Two right angles can form a linear pair
  • (D) One obtuse angle and one acute angle cannot form a linear pair
💬 Discuss
✅ Correct Answer: (D) One obtuse angle and one acute angle cannot form a linear pair
Q. The sum of the measures of the angles in a linear pair is
  • (A) 90°
  • (B) 180°
  • (C) 360°
  • (D) none of these
💬 Discuss
✅ Correct Answer: (B) 180°
Q. Which of the following statements is false?
  • (A) Two vertically opposite angles can be acute
  • (B) Two vertically opposite angles can be obtuse
  • (C) Two vertically opposite angles can be right angles
  • (D) Two vertically opposite angles may be unequal
💬 Discuss
✅ Correct Answer: (D) Two vertically opposite angles may be unequal
Q. Which of the following statements is false?
  • (A) When a transversal cuts two parallel lines, each pair of corresponding angles are equal.
  • (B) When a transversal cuts two parallel lines, each pair of alternate interior angles are equal.
  • (C) When a transversal cuts two parallel lines, each pair of interior angles on the same side of the transversal are supplementary.
  • (D) A transversal cuts two parallel lines in three points
💬 Discuss
✅ Correct Answer: (D) A transversal cuts two parallel lines in three points

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Table of contents

  1. When the sum of the measures of two angles is 90°, the angles are called
  2. The sum of the measures of two complementary angles is
  3. The measure of the complement of the angle 30° is
  4. Which of the following statements is true?
  5. The measure of the complement of the angle 46° is
  6. What is the measure of the complement of the angle 80°?
  7. Which pair of the following angles are complementary?
  8. The measure of the angle which is equal to its complement is
  9. Which of the following pairs of angles is not a pair of complementary angles?
  10. What is the measure of the complement of the angle 90°?
  11. When the sum of the measures of two angles is 180°, the angles are called
  12. The sum of the measures of two supplementary angles is
  13. The measure of the supplement of the angle 120° is
  14. Which of the following statements is true?
  15. The measure of the supplement of the angle 90° is
  16. The measure of the angle which is equal to its supplement is
  17. Which of the following pairs of angles is not a pair of supplementary angles?
  18. What is the measure of the supplement of the angle 0°?
  19. The measure of the supplement of the angle 179° is
  20. Which of the following statements is true?
  21. The angles in a linear pair are
  22. Which of the following statements is true?
  23. The sum of the measures of the angles in a linear pair is
  24. Which of the following statements is false?
  25. Which of the following statements is false?

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