考验眼力的游戏 => eyeball

[loddit]

很好懂，移动光标或线段到指定位置(角度)看你和标准答案差多少。

http://woodgears.ca/eyeball/

btw 我觉得选中点是最难的类型。

[manhere]

Average error: 10.19 (lower is better)

[regent]

有点意思

[pinepara]

Average error: 3.29 (lower is better)

[pinepara]

Parallelogram 5.2 4.1 2.5
Midpoint 7.6 1.5 1.9
Bisect angle 3.5 1.2 3.1
Triangle center 3.6 2.7 1.9
Circle center 7.5 4.4 4.2
Right angle 4.4 0.6 2.0
Convergence 1.6 3.1 2.5

好像对我来说找圆心最难……

[levn]

Average error: 2.95 (lower is better)

[feiandxs]

Your inaccuracy by category:

Parallelogram 2.2 ---- ----
Midpoint ---- ---- ----
Bisect angle ---- ---- ----
Triangle center ---- ---- ----
Circle center ---- ---- ----
Right angle ---- ---- ----
Convergence ---- ---- ----

Average error: 2.20 (lower is better)
Time taken: 5.6

[Sunnyday1022]

Average error: 2.47 (lower is better)

感觉Triangle center最不好找

[loddit]

Your inaccuracy by category:
Parallelogram 2.0 2.2 5.1
Midpoint 2.2 5.8 6.4
Bisect angle 0.0 2.1 2.0
Triangle center 3.4 3.5 1.2
Circle center 2.2 1.4 1.4
Right angle 1.2 0.2 0.9
Convergence 1.4 7.0 3.0
Average error: 2.60 (lower is better)
Time taken: 310.8

有个诀窍，三条线交点的那个，其实这要盯着两条线就可以了，找两个角度合适会比较好对。