(1)
110° x 70° 40° |
(2)
50° 60° x 60° 30° |
(3)
60° 110° 30° 100° 30° x |
(4)
x 80° 60° 50° 30° |
(1)
110° x 70° 40° 五角形の外角の和=360° ∠x=360-(110+90+70+40)=50° |
(2)
50° 60° x A 60° 30° 六角形の外角の和=360° ∠xの外角を∠Aとする. ∠A=360-(50+60+90+60+30)=70° ∠x=180-∠A=110° |
(3)
60° 110° 30° 100° 30° x 六角形の外角の和=360° ∠x=360-(60+110+30+100+30)=30° |
(4)
x 80° 60° 50° 30° 六角形の外角の和=360° ∠x=360-(80+60+90+50+30)=50° |