Mathematics
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なるべくはやめにこの二問解説お願いします🍀

「140° 88° X 16 300 128° X 75° ~45° 33°

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✨ Best Answer ✨


黒丸1個をx°、白丸1個をy°とする。
140+88+2x+2y=360
2x+2y=132
x+y=66
180-66=114
x=114


補助線CEをひくと△CEDができて簡単に解けるようになる!

ネイピア

あ、右のxは59です

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