QUESTION IMAGE
Question
question
if ( sy = 22 ), find ( sw ).
answer attempt 1 out of 2
( sw=)
Step1: 重心性质
三角形三条中线交于一点,这点叫做三角形的重心,重心到顶点的距离是它到对边中点距离的\(2\)倍。
已知\(SY = 22\),\(Y\)是\(\triangle STU\)的重心,\(SW\)是中线,\(SY\)是重心到顶点\(S\)的距离,\(YW\)是重心到对边中点\(W\)的距离。
根据重心性质\(SY = 2YW\),则\(YW=\frac{SY}{2}=\frac{22}{2} = 11\)。
Step2: 求\(SW\)长度
因为\(SW=SY + YW\),把\(SY = 22\),\(YW = 11\)代入可得\(SW=22 + 11=33\)。
Snap & solve any problem in the app
Get step-by-step solutions on Sovi AI
Photo-based solutions with guided steps
Explore more problems and detailed explanations
\(33\)