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Student Question

Secondary I • 2yr.


Here is my exercise:

Give an example of an angle:

  • obtuse
  • acute
  • flat
  • solid
  • re-entrant
  • null
  • right

I know very well what an obtuse and acute angle is, but I do not remember the others ..

thanks in advance


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Explanations (1)

  • Explanation from Alloprof

    Explanation from Alloprof

    This Explanation was submitted by a member of the Alloprof team.

    Team Alloprof • 2yr.

    Hello to you!

    I will give you a little reminder for your homework:

    • null: angle of 0º
    • acute: angle between 0 ° and 90 °
    • right: angle of 90 ° 
    • obtuse : angle between 90 ° and 180 °
    • flat: angle of 180 °
    • re-entrant: angle between 180 ° and 360 °
    • full: 360º angle

    You now have all the tools you need to excel in classifying angles! 

    Do not hesitate if you have other questions, it will be a real pleasure to help you :)

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