Which shape is larger?

A
B
None of them
Both are larger
Both shapes are the same, but the bottom one is placed more to the right. This is however difficult to notice. It is known as Jastrow Illusion.
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Answers by country

A
B
None of them
Both are larger
answers
flagFrance
2%
5%
76%
14%
34
flagGreece
0%
19%
69%
11%
36
flagthe Netherlands
0%
15%
66%
15%
33
flagPoland
2%
19%
65%
11%
30285
flagSwitzerland
2%
17%
63%
17%
41
flagCanada
6%
17%
61%
13%
75
flagthe United Kingdom
4%
16%
60%
17%
313
flagSingapore
2%
15%
58%
23%
39
flagGermany
4%
15%
57%
21%
443
flagAustralia
3%
13%
56%
25%
94
flagAustria
3%
12%
56%
28%
64
flagthe United States
5%
19%
53%
20%
1000
flagthe Philippines
7%
21%
50%
20%
69
flagUnknown
9%
26%
50%
14%
42
flagBelarus
3%
16%
50%
30%
30
flagUkraine
2%
17%
49%
30%
170
flagRussia
6%
15%
48%
26%
138
flagRepublic of Ireland
6%
20%
44%
24%
29
flagIndia
10%
27%
35%
26%
444
flagthe United Arab Emirates
6%
34%
13%
44%
29