This pinwheel star is formed by rotating a right-angled triangle around one of its corners. What is the angle at each of the nine tips that are marked with dots?
Select one option, then click Submit.
30
40 ◦ ◦
45 ◦ ◦
50 ◦
60
Select an option, then submit.
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Australian Mathematics Competition 2017 - Junior (2017)
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