Mathematics
Junior High
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教えてくれると嬉しいです!!
沢山書き込んでてすいません((汗

Eとする円の周上に 延長した直痕上 KYA

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✨ Best Answer ✨

∠CBD=90°+x
∠CDB=2x
△BCDについて 27°+90°+x+2x=180°
                 3x=63°
                  x=21° だと思う

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