The regular octagon will consist of 8 congruent isosceles triangles each having equal angles of 67.5 degrees and an apex angle of 45 degrees.
Equal sides are: square root of 309.019336*2/sin(45)*8 = 10.45250372 cm
Base length: 10.45250372*sin(45)/sin(67.5) = 8 cm
Perimeter: 8*8 = 64 cm
Its sides are 8 cm long.
Area in square units = 0.5*(apothem)*(perimeter)
If the sides are of length 4 units then the perimeter is 8*4 = 32 units. Its area is then 77.255 square units.
Yes.
Square.
square and octagon
Area in square units = 0.5*(apothem)*(perimeter)
If the sides are of length 4 units then the perimeter is 8*4 = 32 units. Its area is then 77.255 square units.
To turn a 9x9 square into an octagon you can cut corners off the square. It will not be a regular octagon though.
Yes.
Square.
A square.
An apothem of a regular polygon is a segment from its center to the midpoint of a side. You can use the apothem to find the area of a regular polygon using this formula: A = pa/2 where p is the perimeter of the figure and a is the apothem. For a regular octagon with side length 11, the perimeter p = 8(11) = 88. So the area would be A = 88(8.85)/2 = 389.4 square units.
No but lots of them can.
square and octagon
You cannot use a regular octagon on it's own to make a tiling pattern without any gaps. However a regular Octagon and a square can be used together to make a tessellation. Many people think that regular octagons tesselate on their own because they do not appreciate the need for no gaps.
There are many regular polygons like the square, pentagon, hexagon, and octagon
A square, pentagon, decagon, octagon are always regular polygons.