Grade: 4 Subject: Math Unit: Angles and Geometry Lesson: 6 of 6 SAT: Geometry+Trigonometry ACT: Math

Unit Quiz

Instructions

This quiz covers everything you have learned in the Angles and Geometry unit. Answer all 10 questions to test your mastery of the material.

Topics Covered:

  • Measuring angles with a protractor
  • Classifying angles (acute, right, obtuse, straight)
  • Solving angle word problems
  • Finding missing angles
  • Avoiding common mistakes

Scoring:

  • 9-10 correct: Excellent - You have mastered this unit!
  • 7-8 correct: Good - Review the questions you missed
  • 5-6 correct: Fair - Review lessons 1-5 before moving on
  • Below 5: Review the entire unit and retake the quiz

Unit Quiz Questions

Try to answer each question before clicking to reveal the answer. Keep track of your score.

Question 1: What is the name of the tool used to measure angles?

Answer: A protractor.

Question 2: An angle measures 72 degrees. What type of angle is it?

Answer: Acute angle. It is less than 90 degrees.

Question 3: What is the measure of a straight angle?

Answer: 180 degrees.

Question 4: If two angles on a straight line together measure 180 degrees, and one angle is 55 degrees, what is the other angle?

Answer: 125 degrees. (180 - 55 = 125)

Question 5: At what time do clock hands form a right angle?

Answer: 3:00 or 9:00. At these times, the hands are 90 degrees apart.

Question 6: A pizza is cut into 6 equal slices. What is the angle at the tip of each slice?

Answer: 60 degrees. (360 / 6 = 60)

Question 7: True or False: An angle of 91 degrees is a right angle.

Answer: False. A right angle is exactly 90 degrees. 91 degrees is an obtuse angle.

Question 8: When using a protractor, where should you place the center point?

Answer: Exactly on the vertex (the point where the two rays meet).

Question 9: The three angles of a triangle add up to how many degrees?

Answer: 180 degrees.

Question 10: A student measures an angle that looks much larger than a square corner and gets 35 degrees. What mistake did they probably make?

Answer: They read the wrong scale on the protractor. The angle should be obtuse (greater than 90 degrees), so the correct reading is likely 145 degrees (180 - 35 = 145).

Check Your Score

Count how many questions you answered correctly before revealing the answers.

  • 9-10 correct: Excellent work! You have mastered angles and geometry. You are ready to move on to the next unit.
  • 7-8 correct: Good job! Review the questions you missed, then move on.
  • 5-6 correct: You are getting there. Review Lessons 1-5 and try the quiz again.
  • Below 5: Take your time to review the entire unit. Practice with a protractor before retaking the quiz.

Next Steps

  • If you scored 7 or above, congratulations on completing this unit!
  • Return to the Mathematics page to explore other units
  • Practice identifying angles in everyday objects to reinforce your skills