本课配套习题挑战模式1/5
如图,在△ABC中,∠C=90°,AB的垂直平分线交AB于D,交BC于E,连接AE,若CE=5,AC=12,则BE的长是( )
A: 5 |
B: 10 |
C: 12 |
D: 13 |
- 提示1:PHA+5qC55o2u5Z6C55u05bmz5YiG57q/55qE5a6a5LmJ5Y+v5b6XQkU9QUU8L3A+
- 提示2:PHA+5qC55o2u5Yu+6IKh5a6a55CG5Y+v5b6XQUU8L3A+
- 答案:RA==
PHA+6Kej77ya4oi1RUTlnoLnm7TlubPliIZBQjxicj7iiLRCRT1FQTxicj7lnKhSdOKWs0FFQ+S4re+8jEVBPTxpbWcgc3JjPSJodHRwczovL3AyLnFpbmdndW8uY29tL0cxL00wMC9GQS8xMi9yQkFDRkZVX09jUFQ2M0liQUFBREl6V1REczA0MTkucG5nIiBkYXRhLWNrZS1zYXZlZC1zcmM9Imh0dHBzOi8vcDIucWluZ2d1by5jb20vRzEvTTAwL0ZBLzEyL3JCQUNGRlVfT2NQVDYzSWJBQUFESXpXVERzMDQxOS5wbmciIGhlaWdodD0iMjEiIHdpZHRoPSIxODgiPjxicj7iiLRCRT0xMzwvcD4=
本课配套习题挑战模式2/5
有A、B、C三名同学站在一个三角形的三个顶点位置上,他们在玩抢凳子游戏,要求在他们中间放一个木凳,谁先抢到凳子谁获胜,为使游戏公平,则凳子应放的最适当的位置在△ABC的( )
A: 三边中线的交点 |
B: 三边角平分线的交点 |
C: 三边高的交点 |
D: 三边中垂线的交点 |
- 提示1:PHA+5Yez5a2Q56a75LiJ5Lq655qE6Led56a755u4562JPC9wPg==
- 提示2:PHA+5LiJ6L6555qE5Z6C55u05bmz5YiG57q/55qE5Lqk54K556a75LiJ5Lq655qE6Led56a755u4562JPC9wPg==
- 答案:RA==
PHA+6Kej77ya5Yip55So57q/5q6155qE5Z6C55u05bmz5YiG57q/55qE5oCn6LSo5Y+v5b6X77yM6ZyA5pS+5Zyo5LiJ6L6555qE5Lit5Z6C57q/55qE5Lqk54K55LiK77yM5omA5Lul6YCJRDwvcD4=
本课配套习题挑战模式3/5
如图,四边形ABCD中,AC垂直平分BD,垂足为E,下列结论不一定成立的是( )
A: AB=AD |
B: AC平分∠BCD |
C: △BEC≌△DEC |
D: AB=BD |
- 提示1:PHA+5qC55o2u57q/5q615Z6C55u05bmz5YiG57q/5LiK5Lu75oSP5LiA54K577yM5Yiw57q/5q615Lik56uv54K555qE6Led56a755u4562J5Y+v5b6XQUI9QUTvvIxCQz1DRO+8jDwvcD4=
- 提示2:PHA+5YaN5qC55o2u562J6IWw5LiJ6KeS5b2i5LiJ57q/5ZCI5LiA55qE5oCn6LSo5Y+v5b6XQUPlubPliIbiiKBCQ0TvvIxFQj1ERe+8jOi/m+iAjOWPr+ivgeaYjuKWs0JFQ+KJjOKWs0RFQ++8jjwvcD4=
- 答案:RA==
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
本课配套习题挑战模式4/5
如图:Rt△ABC中,∠C=90°,DE是AB的垂直平分线,∠CAD:∠DAB=2:1,则∠B的度数为( )
A: 20° |
B: 22.5° |
C: 25° |
D: 30° |
- 提示1:PHA+55SxREXmmK9BQueahOWeguebtOW5s+WIhue6v++8jOWIqeeUqOe6v+auteeahOWeguebtOW5s+WIhue6v+eahOaAp+i0qOW+l+KIoEI94oigQkFEPC9wPg==
- 提示2:PHA+57uT5ZCI4oigQ0FE77ya4oigREFCPTLvvJox5LiO55u06KeS5LiJ6KeS5b2i5Lik6ZSQ6KeS5LqS5L2Z77yM5Y+v5Lul5b6X5Yiw562U5qGI77yOPC9wPg==
- 答案:Qg==
PHA+6Kej77ya5ZyoUnTilrNBQkPkuK08YnI+4oi1REXmmK9BQueahOWeguebtOW5s+WIhue6vzxicj7iiLTiiKBCPeKIoEJBRDxicj7iiLXiiKBDQUTvvJriiKBEQUI9Mu+8mjE8YnI+4oi0NOKIoEI9OTDCsDxicj7iiLTiiKBCPTIyLjXCsDxicj7mlYXpgIlCPC9wPg==
本课配套习题挑战模式5/5
如图,∠BAC=130°,若MP和QN分别垂直平分AB和AC,则∠PAQ等于( )
A: 50° |
B: 75° |
C: 80° |
D: 105° |
- 提示1:PHA+5qC55o2u57q/5q615Z6C55u05bmz5YiG57q/5oCn6LSo5b6X5Ye6QlA9QVDvvIxDUT1BUTwvcD4=
- 提示2:PHA+5o6o5Ye64oigQj3iiKBCQVDvvIziiKBDPeKIoFFBQ++8jOaxguWHuuKIoEIr4oigQ++8jOWNs+WPr+axguWHuuKIoEJBUCviiKBRQUPvvIzljbPlj6/msYLlh7rnrZTmoYjvvI48L3A+
- 答案:Qw==
PHA+6Kej77ya4oi1TVDlkoxRTuWIhuWIq+WeguebtOW5s+WIhkFC5ZKMQUPvvIw8YnI+4oi0QlA9QVDvvIxDUT1BUe+8jDxicj7iiLTiiKBCPeKIoFBBQu+8jOKIoEM94oigUUFD77yMPGJyPuKIteKIoEJBQz0xMzDCsO+8jDxicj7iiLTiiKBCK+KIoEM9MTgwwrAt4oigQkFDPTUwwrDvvIw8YnI+4oi04oigQkFQK+KIoENBUT01MMKw77yMPGJyPuKItOKIoFBBUT3iiKBCQUMt77yI4oigUEFCK+KIoFFBQ++8iT0xMzDCsC01MMKwPTgwwrDvvIw8YnI+5pWF6YCJQ++8jjwvcD4=