Câte diagonale are un poligon cu 5 laturi, dar cu 6 laturi?

Your question isn't clear. But I infer this is the clear rendering of it;

How many diagonals does a polygon have with 5 sides, but with 6 sides?

Answer:

a. For 5 sides = 5

b. For 6 sides = 9

Step-by-step explanation:

Remember, this is the formula to calculate the number of diagonals of a polygon;

n (n-3) / 2 where n is the sides.

Thus,

for 5 sides = 5 (5-3) / 2

= 5 (2) / 2 = 10/2 = 5

for 6 sides = 6 (6-3) / 2

= 6 (3) / 2 = 18/2 = 9