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Question
in △ghi, m is the centroid. if hm = 10, find hl.
Step1: 三角形重心性质
三角形的重心是三条中线的交点,且重心到顶点的距离是它到对边中点距离的\(2\)倍,即\(HM = 2ML\)。
Step2: 求\(ML\)的长度
已知\(HM = 10\),由\(HM = 2ML\)可得\(ML=\frac{HM}{2}=\frac{10}{2} = 5\)。
Step3: 求\(HL\)的长度
因为\(HL=HM + ML\),把\(HM = 10\),\(ML = 5\)代入可得\(HL=10 + 5=15\)。
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