# How good is your eyeballing skills? **URL:** \ **Category:** The Game Room\ **Created:** [October 7, 2008, 5:15pm UTC](https://boards.straightdope.com/t/how-good-is-your-eyeballing-skills/466865 "2008-10-07T17:15:21Z")\ **Posts on this page:** 20\ **Page:** 1
**Author:** ![Rico](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/rico/32/3582_2.png) [@Rico](https://boards.straightdope.com/u/Rico)\ **Post date:** [October 7, 2008, 5:15pm UTC](https://boards.straightdope.com/t/how-good-is-your-eyeballing-skills/466865/1 "2008-10-07T17:15:21Z")
[http://woodgears.ca/eyeball/](http://woodgears.ca/eyeball/) Grab the square and move it to acheive the stated objective. My first try - average error 7.4, lowest error 0.4 on the Bisect Angle problem. ---
**Author:** ![DeadlyAccurate](https://avatars.discourse-cdn.com/v4/letter/d/ac91a4/32.png) [@DeadlyAccurate](https://boards.straightdope.com/u/DeadlyAccurate)\ **Post date:** [October 7, 2008, 5:27pm UTC](https://boards.straightdope.com/t/how-good-is-your-eyeballing-skills/466865/2 "2008-10-07T17:27:30Z")
Avg: 13.18. Best: .1 on Bisect Angle. I have a real problem making parallelograms. ---
**Author:** ![Paintcharge](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/paintcharge/32/7946_2.png) [@Paintcharge](https://boards.straightdope.com/u/Paintcharge)\ **Post date:** [October 7, 2008, 5:38pm UTC](https://boards.straightdope.com/t/how-good-is-your-eyeballing-skills/466865/3 "2008-10-07T17:38:05Z")
Overall, 3.61. Best was a 0.0 on a bisesect the line. It would have been better, but I made one of the right angles the other direction and got a big score on that. I’ve always been good at that, when I was a set painter, I could see something 1/4" out of level over 15’. ---
**Author:** ![garygnu](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/garygnu/32/2924_2.png) [@garygnu](https://boards.straightdope.com/u/garygnu)\ **Post date:** [October 7, 2008, 5:39pm UTC](https://boards.straightdope.com/t/how-good-is-your-eyeballing-skills/466865/4 "2008-10-07T17:39:25Z")
3.06 I scored a 0.0 and a 0.5 on bisecting an angle. I’m just barely on the good side of the bell curve. I’m going to try again. ---
**Author:** ![Lanzy](https://avatars.discourse-cdn.com/v4/letter/l/74df32/32.png) [@Lanzy](https://boards.straightdope.com/u/Lanzy)\ **Post date:** [October 7, 2008, 5:41pm UTC](https://boards.straightdope.com/t/how-good-is-your-eyeballing-skills/466865/5 "2008-10-07T17:41:35Z")
avg 16, but a 0.0 on center of circle, wo the convergence I would have done much better. ---
**Author:** ![mallocks](https://avatars.discourse-cdn.com/v4/letter/m/f4b2a3/32.png) [@mallocks](https://boards.straightdope.com/u/mallocks)\ **Post date:** [October 7, 2008, 5:45pm UTC](https://boards.straightdope.com/t/how-good-is-your-eyeballing-skills/466865/6 "2008-10-07T17:45:39Z")
3.94, over the averages I didn’t really have any specific strong points or weaknesses. ---
**Author:** ![Santo\_Rugger](https://avatars.discourse-cdn.com/v4/letter/s/e95f7d/32.png) [@Santo\_Rugger](https://boards.straightdope.com/u/Santo_Rugger)\ **Post date:** [October 7, 2008, 5:46pm UTC](https://boards.straightdope.com/t/how-good-is-your-eyeballing-skills/466865/7 "2008-10-07T17:46:43Z")
Not too hot, 5.36. I was just on the wrong side of the skewed bell curve. I blame it on my first two bad clicks (10+), and being lazy when trying to find the center of the triangle. ETA: A little better, 3.5, but I NAILED the parallelogram, 0.0! Still lazy on the triangles. ---
**Author:** ![Bosstone](https://avatars.discourse-cdn.com/v4/letter/b/22d042/32.png) [@Bosstone](https://boards.straightdope.com/u/Bosstone)\ **Post date:** [October 7, 2008, 5:50pm UTC](https://boards.straightdope.com/t/how-good-is-your-eyeballing-skills/466865/8 "2008-10-07T17:50:32Z")
Average 6.60 on my first try, but that’s skewed by not understanding the Triangle Center problem on my first go-round (53.7!). Second try, I averaged 4.47. Worst score was 11.0 on Convergence the first time. ---
**Author:** ![garygnu](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/garygnu/32/2924_2.png) [@garygnu](https://boards.straightdope.com/u/garygnu)\ **Post date:** [October 7, 2008, 5:54pm UTC](https://boards.straightdope.com/t/how-good-is-your-eyeballing-skills/466865/9 "2008-10-07T17:54:16Z")
Got a 2.63 on my second try through, which could have been better if not for a 14.6 on a line midpoint. ---
**Author:** ![gladtobeblazed](https://avatars.discourse-cdn.com/v4/letter/g/85f322/32.png) [@gladtobeblazed](https://boards.straightdope.com/u/gladtobeblazed)\ **Post date:** [October 7, 2008, 5:54pm UTC](https://boards.straightdope.com/t/how-good-is-your-eyeballing-skills/466865/10 "2008-10-07T17:54:56Z")
First time through I got 6.35 and the second time I got 5.05. ---
**Author:** ![Pleonast](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/pleonast/32/1183_2.png) [@Pleonast](https://boards.straightdope.com/u/Pleonast)\ **Post date:** [October 7, 2008, 5:58pm UTC](https://boards.straightdope.com/t/how-good-is-your-eyeballing-skills/466865/11 "2008-10-07T17:58:44Z")
First time through, my average error is 2.31. My best categories are bisecting the angle and circle center. My worst are midpoint and right angle. Very strange how some things are easy and others are so much harder. Gives some insight into how your brain processes things. ---
**Author:** ![Colophon](https://avatars.discourse-cdn.com/v4/letter/c/f05b48/32.png) [@Colophon](https://boards.straightdope.com/u/Colophon)\ **Post date:** [October 7, 2008, 6:02pm UTC](https://boards.straightdope.com/t/how-good-is-your-eyeballing-skills/466865/12 "2008-10-07T18:02:46Z")
Your inaccuracy by category: Parallelogram 7.6 1.0 2.0 Midpoint 3.2 4.5 7.3 Bisect angle 0.9 1.2 3.8 Triangle center 2.2 4.5 5.8 Circle center 1.4 2.0 1.4 Right angle 1.7 0.9 0.0 Convergence 9.0 3.2 1.0 Average error: 3.08 (lower is better) Nailed the last right-angle, but my performance got steadily worse in several categories! Second run through, done quickly: Your inaccuracy by category: Parallelogram 4.5 2.2 1.0 Midpoint 4.1 0.0 0.0 Bisect angle 1.3 2.2 2.7 Triangle center 6.5 9.1 2.0 Circle center 1.0 4.1 5.8 Right angle 2.8 4.7 3.7 Convergence 2.2 9.9 5.8 Average error: 3.60 (lower is better) Nailed the midpoint 0.0 twice in a row 🙂 ---
**Author:** ![Ellen\_Cherry](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/ellen_cherry/32/3600_2.png) [@Ellen\_Cherry](https://boards.straightdope.com/u/Ellen_Cherry)\ **Post date:** [October 7, 2008, 6:05pm UTC](https://boards.straightdope.com/t/how-good-is-your-eyeballing-skills/466865/13 "2008-10-07T18:05:18Z")
My Average error: 4.09. I did the best on the parallelogram, with 1.0, and the right angle, 1.2. My worst was Bisect angle. 8.4 I think I’ll try again too! ---
**Author:** ![Claptree](https://avatars.discourse-cdn.com/v4/letter/c/58f4c7/32.png) [@Claptree](https://boards.straightdope.com/u/Claptree)\ **Post date:** [October 7, 2008, 6:08pm UTC](https://boards.straightdope.com/t/how-good-is-your-eyeballing-skills/466865/14 "2008-10-07T18:08:51Z")
4.10 on my first run, with the circle being my best. Second run I got a 3.65, but I totally buggered the midway point. Apparently, I suck at judging distances. ---
**Author:** ![Yllaria](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/yllaria/32/3452_2.png) [@Yllaria](https://boards.straightdope.com/u/Yllaria)\ **Post date:** [October 7, 2008, 6:18pm UTC](https://boards.straightdope.com/t/how-good-is-your-eyeballing-skills/466865/15 "2008-10-07T18:18:02Z")
Parallelogram 4.5 5.1 4.5 Midpoint 2.2 2.0 2.2 Bisect angle 8.4 1.5 10.0 Triangle center 8.2 9.7 19.4 Circle center 4.1 7.1 1.4 Right angle 31.1 26.5 20.7 Convergence 3.2 2.0 3.0 Average error: 8.42 (lower is better) I totally suck at right angles. Just totally suck. got it down to 4.4, second try - still worst at right angles ---
**Author:** ![Clothahump](https://avatars.discourse-cdn.com/v4/letter/c/51bf81/32.png) [@Clothahump](https://boards.straightdope.com/u/Clothahump)\ **Post date:** [October 7, 2008, 6:25pm UTC](https://boards.straightdope.com/t/how-good-is-your-eyeballing-skills/466865/16 "2008-10-07T18:25:23Z")
10.40 ---
**Author:** ![twickster](https://avatars.discourse-cdn.com/v4/letter/t/ec9cab/32.png) [@twickster](https://boards.straightdope.com/u/twickster)\ **Post date:** [October 7, 2008, 6:30pm UTC](https://boards.straightdope.com/t/how-good-is-your-eyeballing-skills/466865/17 "2008-10-07T18:30:13Z")
7.66 on my first run through, due to two really bad scores resulting from premature mouse release. I am really, really good at converging lines and bisecting angles. ---
**Author:** ![Projammer](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/projammer/32/559_2.png) [@Projammer](https://boards.straightdope.com/u/Projammer)\ **Post date:** [October 7, 2008, 6:31pm UTC](https://boards.straightdope.com/t/how-good-is-your-eyeballing-skills/466865/18 "2008-10-07T18:31:56Z")
4.4 first round. 0 on center of circle. 10.8 on center of triangle. Your inaccuracy by category: Parallelogram 4.5 7.1 3.0 Midpoint 1.4 3.6 5.0 Bisect angle 3.8 1.1 1.1 Triangle center 2.2 10.8 4.3 Circle center 8.5 2.2 0.0 Right angle 4.1 8.6 5.3 Convergence 6.3 5.1 4.5 Average error: 4.40 (lower is better) ---
**Author:** ![Litoris](https://avatars.discourse-cdn.com/v4/letter/l/9f8e36/32.png) [@Litoris](https://boards.straightdope.com/u/Litoris)\ **Post date:** [October 7, 2008, 6:36pm UTC](https://boards.straightdope.com/t/how-good-is-your-eyeballing-skills/466865/19 "2008-10-07T18:36:24Z")
Fun little [game](http://woodgears.ca/eyeball/)where you eyeball the correct answer. My scores: Your inaccuracy by category: Parallelogram 4.1 1.0 6.0 Midpoint 3.6 7.6 2.8 Bisect angle 4.7 8.6 2.1 Triangle center 1.7 15.2 3.3 Circle center 1.4 2.0 6.0 Right angle 5.6 3.4 8.7 Convergence 5.7 7.3 14.0 Average error: 5.47 (lower is better) ---
**Author:** ![Chessic\_Sense](https://avatars.discourse-cdn.com/v4/letter/c/7c8e57/32.png) [@Chessic\_Sense](https://boards.straightdope.com/u/Chessic_Sense)\ **Post date:** [October 7, 2008, 6:37pm UTC](https://boards.straightdope.com/t/how-good-is-your-eyeballing-skills/466865/20 "2008-10-07T18:37:30Z")
Parallelogram 5.0 4.1 11.3 Midpoint 4.0 4.1 5.8 Bisect angle 1.1 0.9 3.3 Triangle center 10.7 2.0 5.2 Circle center 2.2 2.2 4.5 Right angle 0.1 1.5 1.9 Convergence 3.2 1.4 2.2 Average error: 3.65 I rock. [Next page](https://boards.straightdope.com/t/how-good-is-your-eyeballing-skills/466865.md?page=2)