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- Aishang mathematics ke plaza
Aishang mathematics ke plaza
Solution: (1) The straight line passing through E is parallel to BC passing through DC, and AB is at point F and point G respectively.
Then,,
∵
∴
∴ ,
∴ 。
(2) Make MH∨BC and AB at H point.
Then,
∵
∴
∵ ,
∴
∴
∴ 。
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