✨ Best Answer ✨
BEFD = 2*△BCD = 20
x = 20
EGHD = 2*△EDF = 2*△BCD = 20
y = 20
x + 2y = 60
4-2平行四邊形
✨ Best Answer ✨
BEFD = 2*△BCD = 20
x = 20
EGHD = 2*△EDF = 2*△BCD = 20
y = 20
x + 2y = 60
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