How sharp is your eye? Estimate ten rotated angles in degrees, watch the protractor reveal the truth and chase a perfect 1,000-point round.
2 minSolo Made for touch
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Weekly leaderboard · your best run this week counts · resets Monday 00:00 UTCEach of the 10 angles scores up to 100, minus 3 points for every degree you are off.
How sharp is your eye? Estimate ten rotated angles in degrees, watch the protractor reveal the truth and chase a perfect 1,000-point round.
How to play Guess the Angle
Each round shows an angle at a random rotation, with the side to measure marked by a small arc. Some are larger than 180°. Estimate it in degrees (1–359): tap the number pad on phones, or type digits on a keyboard (Backspace fixes a digit). Press Guess, Lock or Enter. Each of ten rounds lasts 15 active seconds. Anything typed when time runs out is scored. Score up to 100 per angle; each degree of error costs 3 points. The reveal sweeps a protractor over the true angle, overlays your guess and shows how far off you were. Within 5° in a row builds a streak. Press Next angle to continue.
A tip for your next run
Anchor on landmarks: 90° is a square corner, 180° a straight line. Judge the gap from the nearest one, and check whether the marked side is the bigger one.
How is Guess the Angle scored?
Each of the 10 angles scores up to 100, minus 3 points for every degree you are off, so a perfect round is 1,000. You have 15 active seconds per angle.
How do I enter my guess in Guess the Angle?
Type a whole number of degrees from 1 to 359 on the number pad or keyboard, then press Guess, Lock or Enter. Some angles are larger than 180°.
Quick answers about Guess the Angle
What is Guess the Angle?
Guess the Angle is a free puzzle game you play in your browser. It is also listed under Brain & Puzzle, Physics & Skill and Quick Play. How sharp is your eye? Estimate ten rotated angles in degrees, watch the protractor reveal the truth and chase a perfect 1,000-point round.
Is Guess the Angle free to play?
Yes. Guess the Angle is free on SlayArcade, with no download or install. It runs in your browser on desktop, tablet and mobile.
Can I play Guess the Angle on my phone?
Yes. Guess the Angle works in the browser on phones and tablets with touch controls, and on a computer with a mouse or keyboard. The how-to-play section on this page lists the exact controls.
