[题目]如图.正方形BCPQ对角线交于点A.将一块等腰直角三角形中45°角的顶点放在A点.斜边AG所在的直线交BC于点D.直角边AH所在的直角交BC于点E. (1)在边BC上取一点M.连接AM.AD平分∠BAM.求证:AE平分∠MAC,的条件下.请判断BD.CE.DE之间的数量关系.并证明你的结论.
PA + PC = 0 , QA + QB + QC = BC ,则四边形BCPQ的面积为___. 试题答案 在线课程 ∵点P满足 PA + PC = 0 , ∴ PA =- PC ,可得点P是线段AC的中点 又∵ QA + QB + QC = BC ∴ QA = BC + CQ + BQ =2 BQ 可得Q是线段AB的靠近B点的三等分点 因此,...
【答案】见解析【解答过程】如图:过C作于G,过A作交MD延长线于H四边形ABEF和四边形BCPQ都是正方形,BC=BQ,,,在与中在与中,在与中是AC的中点【考点】本题主要考查了正方形的性质及全等三角形的判定与性质,【重难点】解答本题的关键是熟练利用全等三角形的对应边相等进行线段的等量代换,如:由AC可推出AH=BM,...
,则四边形BCPQ的面积为 . 相关知识点: 代数 平面向量 平面向量的综合题 试题来源: 解析 2 3 【分析】根据题中的向量等式,结合向量的线性运算可得:点P是线段AC的中点且Q是线段AB的靠近B点的三等分点.由此结合正弦定理的面积公式,算出S△APQ= 1 3=S△ABC= 1 3,即可得到则四边形BCPQ的面积....
解答解:∵正方形ABCD的面积为169cm2, ∴BC=√169169=13, 又∵菱形BCPQ的面积为156cm2, ∴CT=1561315613=12,CP=BC=13, ∴PT=√132−12232−22=5, ∴△CPT的面积=1212×12×5=30, ∴阴影部分的面积=正方形ABCD的面积+△CPT的面积-菱形BCPQ=169+30-156=43(cm2), ...
-q Executes the SET QUOTED_IDENTIFIER ON statement in the connection between thebcputility and an instance of SQL Server. Use this option to specify a database, owner, table, or view name that contains a space or a single quotation mark. Enclose the entire three-part table or view name ...
-q Executes the SET QUOTED_IDENTIFIER ON statement in the connection between thebcputility and an instance of SQL Server. Use this option to specify a database, owner, table, or view name that contains a space or a single quotation mark. Enclose the entire three-part table or view name ...
-q no se aplica a los valores que se pasan a -d.Para más información, consulte la sección Comentarios más adelante en este artículo.-r row_termEspecifica el terminador de la fila. El valor predeterminado es \n (carácter de nueva línea). Use este parámetro para sustituir el ...
-Qbcp 유틸리티와 SQL Server인스턴스 간의 연결에서 SET QUOTED_IDENTIFIER ON 문을 실행합니다. 이 옵션을 사용하여 공백이나 작은따옴표를 포함하는 데이터베이스, 소유자, 테이블 또는 뷰 ...
-qExecutes the SET QUOTED_IDENTIFIER ON statement in the connection between the bcp utility and an instance of SQL Server. Use this option to specify a database, owner, table, or view name that contains a space or a single quotation mark. Enclose the entire three-part table or view name...