Answer:
443.28
Step-by-step explanation:
Subtract 42.24 from 570.3 three times.
(x+2)^5
n = 3
r = 5
3rd term is 5x^3y^2
To find the sum of the interior angles of a nonagon, divide it up into triangles... There are seven triangles... Because the sum of the angles of each triangle is 180 degrees... We get
7 * 180 = 1260°
So, the sum of the interior angles of a nonagon is 1260 degrees.
Answer:
schläfli symbol {50}, t{25}
Coxeter diagram
Symmetry group Dihedral (D50), order 2×50
Internal angle (degrees) 172.8°
5 more rows
Step-by-step explanation:
