Answer:
80 and 20
Step-by-step explanation:
80+80+20=180
9
H=1/2 * B
N=H-5= 1/2 * B-5
B+H+N= B+(1/2 *B) + (1/2 *B-5)=31
2B-5=31
B=18
H=1/2 *B=9
Considering the Law of Cosines: