(1)
100° 100° 140° 150° x |
(2)
80° x 110° 60° 140° |
(3)
80° 120° 150° 100° 150° x 150° |
(4)
140° 150° 140° 100° x |
(1)
100° 100° 140° 150° x ∠x=720-(90+100+100+140+150)=140° |
(2)
80° x 110° 60° 140° ∠x=540-(80+110+60+140)=150° |
(3)
80° 120° 150° 100° 150° x A 150° ∠xの内角を∠Aとする. ∠A=900-(80+120+150+100+150+150)=150° ∠x=180-∠A=30° |
(4)
140° 150° 140° 100° x A ∠xの内角を∠Aとする. ∠A=720-(140+90+150+140+100)=100° ∠x=180-∠A=80° |