Item:Q7812: Difference between revisions
Created claim: has quality (P14): area of plane shape (Q5567) |
Created claim: has quality (P14): inradius (Q5602) |
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| Property / has quality | |||
| Property / has quality: inradius / rank | |||
Normal rank | |||
| Property / has quality: inradius / qualifier | |||
defining formula: r=\frac{t}{2\tan ( \pi /5)}=\frac{t}{2\sqrt{5-\sqrt{20}}} | |||
