Mathematics
Junior High
Resolved

「次の図で、∠x、∠yの大きさをそれぞれ求めよ。」という問題で⑦、⑧、⑨解説お願いします🥲

10 85° X Y 70° 18 B A "D8 100° Y 19 A 0 105° B 100° I

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