x/[1/(1/2)]=k x/2=k x=2k
y/[1/(1/3)]=k y/3=k y=3k
z/[1/(1/6)]=k z/6=k z=6k
x+y+z=180°
2k+3k+6k=180°
11k=180°
k=180/11
x=2×180/11=360/11=32,(72)°
y=3×180/11=540/11=49,(09)°
z=6×180/11=1080/11=98,(18)°
2.
x/(1/3)=k 3x=k x=k/3
y/(1/4)=k 4y=k y=k/4
z/(1/6)=k 6z=k z=k/6
x+y+z=180°
k/3+k/4+k/6=180°
4k+3k+2k=2160°
k=2160/9=240
x=240/3=80°
y=240/4=60°
z=240/6=40°