Объяснение:
P∆ABC=AB+BC+CA=6+7+8=21
P∆A1B1C1=84
P∆ABC/P∆A1B1C1=k
21/84=0.25
k=0.25
AB/A1B1=BC/B1C1=CA/C1A1=k
A1B1=AB/k
A1B1=6/0.25=24
B1C1=BC/k
B1C1=7/0.25=28
C1A1=CA/k
C1A1=8/0.25=32
Объяснение:
P∆ABC=AB+BC+CA=6+7+8=21
P∆A1B1C1=84
P∆ABC/P∆A1B1C1=k
21/84=0.25
k=0.25
AB/A1B1=BC/B1C1=CA/C1A1=k
A1B1=AB/k
A1B1=6/0.25=24
B1C1=BC/k
B1C1=7/0.25=28
C1A1=CA/k
C1A1=8/0.25=32