本课配套习题挑战模式1/5
单选题
难度系数:
1.如图BD是∠ABC的平分线,P是BD上一点,PE⊥BA于点E,PE=4cm,则点P到BC的距离为____cm.

A: 1cm |
B: 2cm |
C: 3cm |
D: 4cm |
一次做对,真牛!
+5奖励规则>
- 提示1:6KeS5bmz5YiG57q/5LiK55qE54K55Yiw6KeS5Lik6L6555qE6Led56a755u4562J
- 答案:RA==
6Kej562U77ya4oi1QkTmmK/iiKBBQkPnmoTlubPliIbnur/vvIxQ5pivQkTkuIrkuIDngrk8YnI+5Y+I4oi1UEXiiqVCQe+8jFBFPTRjbTxicj7iiLTngrlQ5YiwQkPnmoTot53nprvkuLo0Y208YnI+5pWF6YCJRA==
本课配套习题挑战模式2/5
单选题
难度系数:
2.三角形中到三边的距离相等的点是( )
A: 三条边的垂直平分线的交点 |
B: 三条高的交点 |
C: 三条中线的交点 |
D: 三条角平分线的交点 |
一次做对,真牛!
+5奖励规则>
- 提示1:6KeS5bmz5YiG57q/55qE5oCn6LSo
- 答案:RA==
6Kej562U77ya5qC55o2u6KeS5bmz5YiG57q/5LiK55qE54K55Yiw6KeS5Lik6L6555qE6Led56a755u4562J77yM5omA5Lul5Yiw5LiJ6KeS5b2i5LiJ6L656Led56a755u4562J55qE54K55bqU5piv5LiJ5p2h6KeS5bmz5YiG57q/55qE5Lqk54K5
本课配套习题挑战模式4/5
单选题
难度系数:
4.如图,AD是∠BAC的平分线,DE⊥AB于点E,DF⊥AC于点F,若S△ABC=7,DE=2,AB=4,则AC的长为()

A: 4 |
B: 3 |
C: 6 |
D: 5 |
一次做对,真牛!
+5奖励规则>
- 提示1:6KeS5bmz5YiG57q/5oCn6LSo
- 提示2:5LiJ6KeS5b2i6Z2i56ev55qE6K6h566X
- 答案:Qg==
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
本课配套习题挑战模式5/5
单选题
难度系数:
5.如图,在△ABC中,∠C=90°,∠ABC的平分线交AC于点E,ED⊥AB,垂足为D,如果AC=6,则AE+DE=____.

A: 8 |
B: 6 |
C: 9 |
D: 12 |
一次做对,真牛!
+5奖励规则>
- 提示1:6KeS5bmz5YiG57q/55qE5oCn6LSo
- 提示2:562J6YeP5Luj5o2i
- 答案:Qg==
6Kej562U77ya4oi1QkXmmK/iiKBBQkPnmoTlubPliIbnur88YnI+4oigQz05MMKw77yMIEVE4oqlQUI8YnI+4oi0RUQ9RUM8YnI+4oi1QUM9Njxicj7iiLRBRStERT02PGJyPuaVhemAiUI=