regular pentagon (Q4375921)
convex regular polygon with 5 sides
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Current Data About regular pentagon
(P18) Image Provided By https://upload.wikimedia.org/wikipedia/commons/b/b5/Regular_Pentagon_Inscribed_in_a_Circle.gif

(P279) (Q5384459)

(Q97150652)
(P155)
(P156)

(Q268132)

(Q18033971)

(Q18033975)

(Q110151676)

(P373) Regular pentagons

(P1312) (Q26382)
(P1114) 5

(P1322) (Q4375921)

(P1552) (Q28474)
(P2534) P=5a

(Q15921574)
(P2534) A=\frac{5}{4} t^2 \mathop{\mathrm{ctg}}\, \frac{\pi}{5} = \frac{\sqrt 5 \sqrt{5 + 2 \sqrt{5}}}{4} t^2 = \frac{5}{12}Rd

(Q3799068)
(P2534) r=\frac{t}{2\tan ( \pi /5)}=\frac{t}{2\sqrt{5-\sqrt{20}}}

(Q3678113)
(P2534) R = \frac{a}{2}\csc\frac\pi{5}

(P3228) {5}

(P6104) (Q8487137)

other details
aliases pentagon
 regular 5-gon
 5-gon
description convex regular polygon with 5 sides

External Links
(P2671) /g/122_4qh2
(P2812) RegularPentagon
(P9997) peg