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# Help Zone

### Student Question

Secondary I • 1yr.

Hello,

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 ..

Mathematics

## Explanations (1)

• Explanation from Alloprof

Explanation from Alloprof

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

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Team Alloprof • 1yr.

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 :)