How to Play Corner Measure
Click and drag any point. All four angles update together, each in its own colour. Use it to explore degrees and the names of angles like acute and obtuse.
Play Corner Measure nowThe Angle tool shows four different angles at once. Drag the points and watch all the angles change.
What is Corner Measure?
Click and drag any point. All four angles update together, each in its own colour. Use it to explore degrees and the names of angles like acute and obtuse.
How to play Corner Measure
Click and drag the points.
Step by step
- Drag a point.
- Watch the four angles change.
- Read the degree measures.
- Find an acute, right and obtuse angle.
- Notice how angles relate to each other.
Strategy tips to play better
- An angle under 90° is acute; exactly 90° is right; over 90° is obtuse.
- Angles on a straight line add to 180°.
- Angles around a point add to 360°.
What kids learn
- Angle types
- Measuring degrees
- Geometry
For parents and teachers
Useful for grades 3 to 6 when angles are introduced.
- ✅ Free to play
- 🕹️ No downloads or installs
- 📱 Works on mobile and desktop
- 🔒 No login or registration
- 🎮 Fast loading and smooth gameplay
Tips & Tricks
Beginner
Make a right angle.
Pro
Check that the four angles always total 360°.
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Educational Importance
Seeing angles change as you move them builds intuition before using a real protractor.
Practical Applications
Ways to use it:
| Use Case | Description |
|---|---|
| Angle names | Acute, right, obtuse. |
| Angle facts | Straight line and full turn. |
| Demonstration | Use on a whiteboard. |
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