(2)点P,Q是BC边上的两个动点(不与B,C重合),点P在点Q的左侧,且AP=AQ,点Q关于直线AC的对称点为M,连接AM,PM. ①依题意将图2补全; ②求证:PA=PM. 试题答案 在线课程 【答案】(1)80°(2)①见解析(2)证明见解析 【解析】 (1)根据等边三角形的性质得到∠B=60°,由三角形的外角等于不相邻的两个...
Pritzker and Ocasio-Cortez: A billionaire and a former bartender emerge as Trump resistance leaders Putin says he hopes there will be no need to use nuclear weapons in Ukraine Highlights from Met Gala exhibit: A look at Black style gives prominent voice to emerging designers ...
AM AB = AN AC ; (3)若点D是BC上任意一点,试证明 AM AB + AN AC = AP AD . 试题答案 在线课程 分析:(1)过点D作DE∥PM交AB于E,由点D为BC中点与AP:PD=2:1,根据平行线分线段成比例定理,即可求得AM:AB的值; (2)延长AD至点Q,使DQ=AD,连BQ、CQ,易得四边形ABQC是平行四边形,由平行四边形...
Donald Trump's trip to Pope Francis' funeral puts a sharper focus on their clashes over the yearsThe clash in style between Donald Trump and Pope Francis and their positions on migration, the environment and poverty will come into sharper focus as the president travels to Rome for Francis’ ...
For detailed behaviour characterisation in naive mice, four time segments of 30 min were defined across 24 h: 10–10 h30 am, 6–6:30 pm, 9–9 h30 pm, and 4–4 h30 am (Fig.1C). This selection of time segments comprised dark/light cycle episodes as previous studi...
Also we'll be reachable on phone or email that booking provides on day time from 8 am till 10pm. 住宿信息 Historical Apartment is newly renovated, highlighting the classical woodwork of the past and combining it with the modern amenity of today. High ceiling, Old style doors, windows, ...
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your config by hand. If you know what you are doing it should be fine. Network manager and ifconfig can work together fine, which is why we leave both. If you define configuration old style, that is the primary one. If not defined, Network manager and its automatic services takes over...
She thinks the time has come. Many politicians, as much as they feel tormented by reporters, recognize the need for journalism on a local level across the country, Chavern said. “We’ve been happily surprised at how many people have come out in support of local news,” he said. DAVID...