Mon Prof Augmenté
Acute Right and Obtuse Angles
Age 9 · Maths
Three pipe cleaners are bent and placed side by side. The narrow bend is an acute angle, the L-shaped bend is a right angle, and the wide bend is an obtuse angle.
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Age 9: open this week
Browse Age 9
In the picture
- Badge 1 sits on the bend of the left pipe cleaner, where the opening is narrow.
- Badge 2 sits on the bend of the middle pipe cleaner, where the shape is an L.
- Badge 3 sits on the bend of the right pipe cleaner, where the opening is wide.
Examples
- The tip of a pizza slice is an acute angle.
- The corner of a window is a right angle.
Key takeaways
- Acute angles are smaller than a right angle.
- Obtuse angles are larger than a right angle.
Quiz: Acute Right and Obtuse Angles (Age 9)
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Which angle is smaller than a right angle?
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Which angle is wider than a right angle?
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What kind of angle makes an L shape?
The answers, each with its explanation, are in the app. This lesson has left the free week, so its quiz is part of the subscription.
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