Angle
Guess the size of a random angle in degrees with four tries and hot-or-cold hints, and build a streak in this free geometry game in your browser.
About Angle
Angle is a quick estimation game for anyone who wants to sharpen their eye for geometry. Each round draws a random angle between 0 and 359 degrees, marked with a red arc, and you type in how wide you think it is. You get four attempts to find the exact number.
After every wrong guess a hint tells you how close you are, from Freezing through Cold and Warm up to Hot and Boiling when you are within five degrees. Guess right and a new angle appears straight away while your streak grows; run out of attempts and the answer is revealed and your streak starts again from zero.
It is a handy practice tool for students learning to measure angles and a surprisingly addictive challenge for adults who think they can eyeball a right angle.
How to play
Look at the angle marked by the red arc and type your guess in degrees, from 0 to 359. Press Check or Enter to submit it; you have four attempts per angle and each miss gives a hot-or-cold hint. A correct guess adds one to your streak and shows a new angle, while New Random Angle skips to a fresh one and resets the streak.
Controls
- 0–9
- Type your guess in degrees
- Enter / Check
- Submit your guess
- Click / Tap
- New Random Angle button
Tips
- Compare the angle with 90 and 180 degrees first, then refine from there.
- Boiling means you are within 5 degrees and Hot within 10, so make small adjustments.
- Remember the red arc shows the angle being measured, even when it is wider than 180 degrees.
- Hints are based on the plain difference in degrees, so guessing 10 for an angle of 350 counts as very far off.
Screenshots
FAQ
Is Angle free to play?
Yes. It is completely free and runs in your browser with no download or sign-up.
Can I play it on a phone or tablet?
Yes. The canvas scales to fit small screens and you type your guess with the on-screen number keyboard.
How does the streak work?
Each angle you guess within four attempts adds one to your streak. Running out of attempts or pressing New Random Angle resets it to zero.
