Question

urgent, grabitiva dau coroana​

Answer 1

Răspuns:

b e triunghi drept sper ca te am ajutat

Answer 2

a) ∠ACB=180-120

∠ACB=60

b) ΔABC=180

ΔABC=∠A+∠B+∠C=180

∠A=∠B

=>∠A+∠B+60=180

=> ∠A+∠B=180-60

=> ∠A+∠B=120

=> 120:2=60

∠BAC=60

∠ABC=60

=> ΔABC este echilateral