Geometry
Regular Polygons
What is the area of a regular hexagon with side length 2?
What is the area of a regular octagon with side length 5?
Use \(\tan22.5^\circ\approx0.4,\tan67.5^\circ\approx2.4.\)
Find the area of a regular decagon whose distance from its center to a vertex is 10.
Use \(\sin18^\circ\approx0.3, \cos18^\circ\approx0.95.\)
An \(n\)-gon is a polygon with \(n\) sides. Which of the following represents the area of a regular \(n\)-gon with side length 1?
An \(n\)-gon is a polygon with \(n\) sides. Which of the following represents the area of a regular \(n\)-gon inscribed in a circle of radius 1?