Respuesta :
Answer:
12
Step-by-step explanation:
The interior angle of a regular polygon of "n" sides is calculated with the formula:
(n-2) × 180 ° / n.
(8-2) × 180 ° / 8 = 6 × 180 ° / 8 = 135 °
And that of a square is (4-2) × 180 ° / 4 = 2 × 180 ° / 4 = 90 °