Question

construct icosagon.....​

Answer 1

The regular icosagon has Schläfli symbol {20}, and can also be constructed as a truncated decagon, t{10}, or a twice-truncated pentagon, tt{5}. One interior angle in a regular icosagon is 162°, meaning that one exterior angle would be 18°.

Answer 2

Answer:

Icosagon :

Area: ½ × perimeter × apothem

Perimeter: 20 x side

Number of vertices: 20

Number of edges: 20

Internal angle: 162°