D P D C K 50 450 300 120° K C ZABC = ∠DKS = SO40° Z COK = D B N B T C 125 G M B K 15 A S R X D ✓ NSM = GKT = 100°; ∠FKB = 30°: Z GKF = : ∠BKT = ∠CXD =

Решение:

1. ∠ABC = 45° + 30° = 75°
2. ∠DKS = 360° - (50°+120°) = 190°
3. ∠COK = 90° - 40° = 50°
4. ∠NSM = 90° - 25° - 25° = 40°
5. ∠GKF = ∠GKT - ∠FKT = 100° - 30° = 70°; ∠BKT = 30°
6. ∠CXD = 180° - 15° - 35° = 130°

1. Ответ: ∠ABC = 75°
2. Ответ: ∠DKS = 190°
3. Ответ: ∠COK = 50°
4. Ответ: ∠NSM = 40°
5. Ответ: ∠GKF = 70°; ∠BKT = 30°
6. Ответ: ∠CXD = 130°