The diagonals of a regular octagon with side length 'a'
The intersection of the diagonals, point I, is also the center of the incircle and circumcircle. Also, the diagonals divide the octagon into 8 equal isosceles triangles.
Expressions
| Name | Input | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Diagonal |  |
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| Diagonal angle | |
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| Side of an isosceles triangle | |
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