# This rocks. \[Eyeballing Game\]

**URL:** <https://boards.straightdope.com/t/this-rocks-eyeballing-game/472425>\
**Category:** The Game Room\
**Created:** [November 12, 2008, 9:42pm UTC](https://boards.straightdope.com/t/this-rocks-eyeballing-game/472425 "2008-11-12T21:42:17Z")\
**Posts on this page:** 15\
**Page:** 3

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**Author:** ![Fugazi](https://avatars.discourse-cdn.com/v4/letter/f/f08c70/32.png) [@Fugazi](https://boards.straightdope.com/u/Fugazi)\
**Post date:** [November 13, 2008, 5:50am UTC](https://boards.straightdope.com/t/this-rocks-eyeballing-game/472425/41 "2008-11-13T05:50:11Z")

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3.57 on the 1st try. 3.11 on the 2nd try.

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**Author:** ![OhFace](https://avatars.discourse-cdn.com/v4/letter/o/ecccb3/32.png) [@OhFace](https://boards.straightdope.com/u/OhFace)\
**Post date:** [November 14, 2008, 3:06am UTC](https://boards.straightdope.com/t/this-rocks-eyeballing-game/472425/42 "2008-11-14T03:06:52Z")

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How much of a dork am I if I think this is fun?

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**Author:** ![Ale](https://avatars.discourse-cdn.com/v4/letter/a/f19dbf/32.png) [@Ale](https://boards.straightdope.com/u/Ale)\
**Post date:** [November 14, 2008, 5:35am UTC](https://boards.straightdope.com/t/this-rocks-eyeballing-game/472425/43 "2008-11-14T05:35:52Z")

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3.24 on my first try, I got perfect 0s on midpoint and convergence, I bungled the right angle by 0.2 units only. 🆒

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**Author:** ![Autolycus](https://avatars.discourse-cdn.com/v4/letter/a/22d042/32.png) [@Autolycus](https://boards.straightdope.com/u/Autolycus)\
**Post date:** [November 14, 2008, 8:17am UTC](https://boards.straightdope.com/t/this-rocks-eyeballing-game/472425/44 "2008-11-14T08:17:33Z")

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Parallelogram 7.3 13.2 4.2  
Midpoint 2.2 5.0 4.0  
Bisect angle 5.1 9.2 5.1  
Triangle center 0.1 5.5 1.5  
Circle center 4.1 1.0 5.1  
Right angle 0.2 1.6 0.6  
Convergence 14.1 3.0 1.0  
\*\*Average error: 4.43 \*\*

I thought I was doing really well, but actually I’m pretty much spot-on the mode. Oh well.

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**Author:** ![NinetyWt](https://avatars.discourse-cdn.com/v4/letter/n/cc9497/32.png) [@NinetyWt](https://boards.straightdope.com/u/NinetyWt)\
**Post date:** [November 14, 2008, 12:56pm UTC](https://boards.straightdope.com/t/this-rocks-eyeballing-game/472425/45 "2008-11-14T12:56:51Z")

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> [@Headrush042](#):
>
> happy to report 0.0 on one of the convergences.

I did that too, although 5.27 was my overall. I was in a hurry! 😛

Easiest for me were parallelogram, convergence, and bisect the angle.

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**Author:** ![The\_Unkempt\_One](https://avatars.discourse-cdn.com/v4/letter/t/b782af/32.png) [@The\_Unkempt\_One](https://boards.straightdope.com/u/The_Unkempt_One)\
**Post date:** [November 14, 2008, 1:37pm UTC](https://boards.straightdope.com/t/this-rocks-eyeballing-game/472425/46 "2008-11-14T13:37:51Z")

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My score was 3.77

I’m going to try again…

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**Author:** ![Turek](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/turek/32/18782_2.png) [@Turek](https://boards.straightdope.com/u/Turek)\
**Post date:** [November 14, 2008, 1:45pm UTC](https://boards.straightdope.com/t/this-rocks-eyeballing-game/472425/47 "2008-11-14T13:45:20Z")

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2.68. The equidistant point on the triangle kept screwing me.

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**Author:** ![Rebo](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/rebo/32/13005_2.png) [@Rebo](https://boards.straightdope.com/u/Rebo)\
**Post date:** [November 14, 2008, 1:53pm UTC](https://boards.straightdope.com/t/this-rocks-eyeballing-game/472425/48 "2008-11-14T13:53:22Z")

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One attempt - 4.09. I’m a mechanical designer - I think that helped a lot!

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**Author:** ![Snickers](https://avatars.discourse-cdn.com/v4/letter/s/5daacb/32.png) [@Snickers](https://boards.straightdope.com/u/Snickers)\
**Post date:** [November 14, 2008, 4:29pm UTC](https://boards.straightdope.com/t/this-rocks-eyeballing-game/472425/49 "2008-11-14T16:29:33Z")

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3.76. Not too shabby.

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**Author:** ![Onomatopoeia](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/onomatopoeia/32/4145_2.png) [@Onomatopoeia](https://boards.straightdope.com/u/Onomatopoeia)\
**Post date:** [November 14, 2008, 5:07pm UTC](https://boards.straightdope.com/t/this-rocks-eyeballing-game/472425/50 "2008-11-14T17:07:33Z")

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4.52 on first try. It seems I do consistently best on Midpoint: 0.0, 2.0, 1.2, and Convergence: 2.0, 2.5, 1.5, and consistently worst on Parallelogram: 8.1, 8.4, 6.1

I wonder what this says about me? :eek:

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**Author:** ![WF\_Tomba](https://avatars.discourse-cdn.com/v4/letter/w/d9b06d/32.png) [@WF\_Tomba](https://boards.straightdope.com/u/WF_Tomba)\
**Post date:** [November 14, 2008, 10:52pm UTC](https://boards.straightdope.com/t/this-rocks-eyeballing-game/472425/51 "2008-11-14T22:52:26Z")

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3.14 on the first try. Pretty good, but not good enough to crack the high score list. I don’t think I have the patience to try again.

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**Author:** ![ComeToTheDarkSideWeHaveCookies](https://avatars.discourse-cdn.com/v4/letter/c/e9bcb4/32.png) [@ComeToTheDarkSideWeHaveCookies](https://boards.straightdope.com/u/ComeToTheDarkSideWeHaveCookies)\
**Post date:** [November 15, 2008, 12:04am UTC](https://boards.straightdope.com/t/this-rocks-eyeballing-game/472425/52 "2008-11-15T00:04:11Z")

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My first attempt. Damn you meddling first convergence!!!

Your inaccuracy by category:

Parallelogram 3.2 0.0 6.3  
Midpoint 3.0 3.2 3.0  
Bisect angle 3.1 3.7 2.5  
Triangle center 4.4 3.4 6.5  
Circle center 2.2 1.0 2.0  
Right angle 0.9 2.2 1.0  
Convergence 14.1 4.1 3.2

Average error: 3.48 (lower is better)

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**Author:** ![tds1273](https://avatars.discourse-cdn.com/v4/letter/t/df705f/32.png) [@tds1273](https://boards.straightdope.com/u/tds1273)\
**Post date:** [November 15, 2008, 12:33am UTC](https://boards.straightdope.com/t/this-rocks-eyeballing-game/472425/53 "2008-11-15T00:33:10Z")

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1st try: 4.46  
2nd: 3.20  
3rd: 3.92

Tip: Dry off your finger and mouse button each time!

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**Author:** ![Fiddle\_Peghead](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/fiddle_peghead/32/3506_2.png) [@Fiddle\_Peghead](https://boards.straightdope.com/u/Fiddle_Peghead)\
**Post date:** [November 15, 2008, 9:52pm UTC](https://boards.straightdope.com/t/this-rocks-eyeballing-game/472425/54 "2008-11-15T21:52:05Z")

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4.68

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**Author:** ![Tenebras](https://avatars.discourse-cdn.com/v4/letter/t/977dab/32.png) [@Tenebras](https://boards.straightdope.com/u/Tenebras)\
**Post date:** [November 15, 2008, 10:41pm UTC](https://boards.straightdope.com/t/this-rocks-eyeballing-game/472425/55 "2008-11-15T22:41:02Z")

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```auto

Your inaccuracy by category:
Parallelogram	1.0	4.5	1.0
Midpoint	1.0	1.0	0.0
Bisect angle	3.1	0.3	2.6
Triangle center	0.6	2.1	3.2
Circle center	2.2	4.1	3.0
Right angle	1.3	4.5	0.5
Convergence	2.2	5.0	2.2
Average error: 2.16 (lower is better) 

```

Unless 10,000 people are playing this game every 5 minutes, there’s something wrong with his score board, as my name doesn’t appear. ☹

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