|
(1)
100° x 30° 50° 50° 30° |
(2)
x 50° 40° 80° |
|
(3)
70° 60° 30° 30° 60° x |
(4)
40° 40° 50° x 60° 50° 30° |
|
(1)
100° x A 30° 50° 50° 30° 六角形の外角の和=360° ∠xの外角を∠Aとする. ∠A=360-(100+30+50+50+30)=100° ∠x=180-∠A=80° |
(2)
x 50° 40° 80° 五角形の外角の和=360° ∠x=360-(90+50+40+80)=100° |
|
(3)
70° 60° 30° 30° 60° x 六角形の外角の和=360° ∠x=360-(70+60+30+30+60)=110° |
(4)
40° 40° 50° x 60° 50° 30° 七角形の外角の和=360° ∠x=360-(40+40+50+60+50+30)=90° |