Assertion: regular polygon | /r/HasProperty | constructed with angle trisector
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Source sentences:
text: A regular polygon with n sides can be constructed with ruler, compass, and angle trisector if and only if n = 2 r 3 s p 1 p 2 ⋯ p k , {\displaystyle n=2^{r}3^{s}p_{1}p_{2}\cdots p_{k},} where r, s, k ≥ 0 and where the p i are distinct Pierpont primes greater than 3 (primes of the form 2 t 3 u + 1 ) .