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nangthu294
2 năm trước
tam giác abc vuông tại m mh là trung tuyến ,hk vuông góc với mp ,hi vuông góc với mn a cm hkmi là hcn b cm k là trung điểm mp c e là điểm đối xứng với h qua k cm meph là hthoi d f là điểm đối xứng h qua i cm e đối xứng f qua m help me!!!
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