Is Game or Full-Screen mode not working?

Play in Fullscreen Mode

Learn About the Game Protractor

I stumbled across Protractor when I was looking for something quick and oddly satisfying to kill a few minutes, and it turned out to be a neat little angle-measuring challenge. The screen shows you a weird shape or pair of rays, and your only tool is an on-screen protractor you can drag, rotate, and line up. Once you’ve got it just right, you type in the degree measurement and hit submit—easy, right? Well, don’t get too cocky; the angles start off friendly but climb into all sorts of acute, obtuse, and straight territory before you know it.

What makes Protractor click for me is the tactile feel of lining that semi-circle up and watching the numbers shift as you nudge it back and forth. There’s a surprising thrill in zeroing in on that exact 65° reading, especially when you’ve only got a few seconds on the clock. If you miss by more than a couple of degrees, you lose points, and watch out—one slip-up can really snowball once the timer’s ticking. But nail a perfect streak, and you earn extra time, a flurry of points, and a spark of smug satisfaction.

Beyond the pure speed-measuring thrill, it’s actually a solid brain jogger. You start to recognize angle patterns instinctively—those little right angles stand out like street signs, while weird skewed figures force you to slow down and think. I’ve caught myself daydreaming about protractors at odd moments, mentally lining things up around me: door frames, picture corners, you name it. It’s goofy, but it’s fun, and you end up sharpening your spatial smarts without even noticing.

At the end of the day, Protractor is that perfect time-fill game: quick rounds, intuitive controls, and a modest challenge curve that keeps you coming back. Whether you’re brushing up for a geometry quiz or just need a satisfying little brain puzzle, it’s worth a spin. Just don’t be surprised if you suddenly find yourself secretly calculating the angle of your coffee mug handle.