Respuesta :

leahsushie
Add all the sides.
It will help.
devishri1977

Answer:

1260

Step-by-step explanation:

Sum of all the angles of a polygon = (n - 2)*180

Sum of all the angles of a 9-sided  polygon = (9-2)*180

                                                                       = 7 * 180 = 1260

Otras preguntas