Question

Ex 10
Va rog frumos
Va rog
Pls
Ajutati ma
Dau coroana

Answer 1

m(∡A)+m(∡B)+m(∡C)=180°

a/3=b/4=c/5=k

a=3k

b=4k

c=5k

3k+4k+5k=180

12k=180

k=180:12

k=15

inlocuim:

a=3k=3*15=45°

b=4k=4*15=60°

c=5k=5*15=75°

verificare:

45°+60°+75°=180°

bafta!!!