In geometry, a ball used in rugby is...

a torus
a hyperball
an elliptic cylinder
an ellipsoid
An ellipsoid is a surface that may be obtained from a sphere by deforming it by means of directional scalings, or more generally, of an affine transformation. A rugby ball is an example of ellipsoid.
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Answers by country

a torus
a hyperball
an elliptic cylinder
an ellipsoid
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flagIsrael
10%
0%
10%
70%
10
flagGermany
1%
7%
22%
66%
54
flagAustria
0%
8%
25%
66%
12
flagthe United States
4%
7%
29%
58%
130
flagthe Philippines
8%
16%
16%
58%
12
flagthe Netherlands
0%
10%
35%
55%
20
flagPoland
6%
8%
30%
54%
3816
flagSpain
0%
9%
36%
54%
11
flagFrance
7%
7%
35%
50%
14
flagIndia
7%
13%
31%
47%
128
flagGreece
0%
8%
45%
45%
24
flagCanada
11%
14%
25%
40%
27
flagthe United Kingdom
5%
12%
42%
38%
138
flagAustralia
4%
4%
56%
36%
25
flagRepublic of Ireland
4%
8%
52%
34%
23
flagGhana
6%
26%
33%
33%
15
flagCzech Republic
0%
0%
70%
30%
10