Question

Даю 40 баллов , сделать номера 3,4,5

Answer 1

3) 2∠Р+∠S=180°⇒ 2(1.5∠S)+∠S=180° 4∠S=180°: ∠S=45° ∠Р=1,5*45=67,5°; ∠R=∠P=67.5°
4)∠Q=180-140=40°;∠L=∠Q/0.4=40/0.4=100°; ∠M=180-100-40=40°
5)∠A+∠C=180-∠В;∠А+∠С=180-40=140°
140/(2+5)=140/7=20°
∠А=2*20=40°; ∠С=5*20=100°