Assertion: heptagon's area | /r/HasProperty | a = nb 2 tan(θ
Facets:
value: with 2n of these
type: OTHER
Source sentences:
text: In terms of b, the area of the triangle is then 1/2 × b × b tan(θ), and with 2n of these, the area of the polygon is A = nb 2 tan(θ)