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astorkid
14.10.2019 •
Mathematics
Which rotation about its center will carry a regular decagon onto itself?
a. 54
b. 162
c. 198
d. 252
!
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Ответ:
D.252
Step-by-step explanation:
In this question, We have to find which rotation about its center will carry a regular decagon onto itself?
A decagon : 10 sided polygon
As we know, a full rotation can be 360°.
For a decagon: 360/10 =36
For a decagon, any multiple of 36 can map onto itself.
In our options only 252 is the multiple of 36.
So, correct answer is option D 252
Ответ: