(1)
100° 50° 30° 30° x 30° |
(2)
50° 100° x 70° 70° |
(3)
70° x 130° 40° 70° |
(4)
100° 80° x 70° 40° |
(1)
100° 50° 30° 30° x 30° 七角形の外角の和=360° ∠x=360-(100+50+90+30+30+30)=30° |
(2)
50° 100° x 70° 70° 五角形の外角の和=360° ∠x=360-(50+100+70+70)=70° |
(3)
70° x 130° 40° 70° 五角形の外角の和=360° ∠x=360-(70+130+40+70)=50° |
(4)
100° 80° x 70° 40° 五角形の外角の和=360° ∠x=360-(100+80+70+40)=70° |