Re: [幾何] 證明題
※ 引述《Mistouko (Mistouko)》之銘言：
: https://ppt.cc/fUDL4x
: 請問各位老師，這一題是用相似形證明嗎？謝謝老師～
AB = a
BC = b
MB = c
a^2 + b^2 = a^2 + 2c^2 = > b = √2 * c
2c : b = √2 : 1 = b : c
=> △BAD ~ △CMB
=> ∠CMB = ∠BAD
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