Տանը՝ 2. գ, 3, 7, 8
2գ
8·180=1440
3. 90°
7. x+x+10+x+20+x+30=360
4x=360-60
4x=300
x=300/4
x=75
75, 85, 95, 105
8. x+2x+4x+5x=360
12x=360
x=360/12
x=30
Տանը՝ 2. գ, 3, 7, 8
2գ
8·180=1440
3. 90°
7. x+x+10+x+20+x+30=360
4x=360-60
4x=300
x=300/4
x=75
75, 85, 95, 105
8. x+2x+4x+5x=360
12x=360
x=360/12
x=30