本课配套习题挑战模式1/5
如图,要在公路道a上修建一个加油站,有A,B两人要去加油站加油,可使两人到加油站的总路程最短,下列作图正确的是( )
A: |
B: |
C: |
D: |
- 提示1:PHA+6L+H54K5QeWBmuWvueensOeCuTwvcD4=
- 提示2:PHA+5Yip55So5Lik54K55LmL6Ze057q/5q615pyA55+tPC9wPg==
- 答案:Qg==
PGRpdj48aW1nIHNyYz0iaHR0cHM6Ly9wMS5xaW5nZ3VvLmNvbS9HMS9NMDAvRkMvRjcvckJBQ0ZGTUowUV95Q3BQZEFBQUxXMGd4RUd3NDEzLnBuZyIgZGF0YS1ja2Utc2F2ZWQtc3JjPSJodHRwczovL3AxLnFpbmdndW8uY29tL0cxL00wMC9GQy9GNy9yQkFDRkZNSjBRX3lDcFBkQUFBTFcwZ3hFR3c0MTMucG5nIiBoZWlnaHQ9IjE1MSIgd2lkdGg9IjE4NiI+PC9kaXY+
本课配套习题挑战模式2/5
直线a上有点M,使得最大,下列画法正确的是( )
A: |
B: |
C: |
D: |
- 提示1:PHA+6L+e5o6lQkHlubblu7bplb/kuqTnm7Tnur9h5LqOTTwvcD4=
- 提示2:PHA+5beu5YC85pyA5aSn5bCx5piv57q/5q61QUI8L3A+
- 提示3:PHA+5Lik6L655Y+q5beu5bCP5LqO56ys5LiJ6L65PC9wPg==
- 答案:Qw==
PGRpdj48aW1nIHNyYz0iaHR0cHM6Ly9wMS5xaW5nZ3VvLmNvbS9HMS9NMDAvMUYvRTEvckJBQ0UxTUowU0h4VG85SkFBQUhSUjNNQW8wMjM5LnBuZyIgZGF0YS1ja2Utc2F2ZWQtc3JjPSJodHRwczovL3AxLnFpbmdndW8uY29tL0cxL00wMC8xRi9FMS9yQkFDRTFNSjBTSHhUbzlKQUFBSFJSM01BbzAyMzkucG5nIiBoZWlnaHQ9IjE1MSIgd2lkdGg9IjIwOSI+PC9kaXY+
本课配套习题挑战模式3/5
如图,在旷野上,一个人骑马从A出发,他欲将马引到河a饮水后再到b饮水,然后返回A地,他走总路程最短的是( )。
A: |
B: |
C: |
D: |
- 提示1:PHA+6L+H54K5QeWIhuWIq+S9nOS4pOadoeebtOe6v+eahOWvueensOeCuTwvcD4=
- 提示2:PHA+6L+e5o6l5a+556ew54K577yM5Lqk54K55Y2z5L2/5oiR5Lus6KaB55qE54K5PC9wPg==
- 提示3:PHA+5Lik54K55LmL6Ze057q/5q615pyA55+tPC9wPg==
- 答案:Qw==
PGRpdj48aW1nIHNyYz0iaHR0cHM6Ly9wMi5xaW5nZ3VvLmNvbS9HMS9NMDAvMUYvRTEvckJBQ0UxTUowUmZ5VnpUTUFBQVBsblVhR0tnOTczLnBuZyIgZGF0YS1ja2Utc2F2ZWQtc3JjPSJodHRwczovL3AyLnFpbmdndW8uY29tL0cxL00wMC8xRi9FMS9yQkFDRTFNSjBSZnlWelRNQUFBUGxuVWFHS2c5NzMucG5nIiBoZWlnaHQ9IjIyNyIgd2lkdGg9IjE4NCI+PC9kaXY+
本课配套习题挑战模式4/5
正方形ABCD中,M在CD上,N是对角线AC上,要是DN+MN最小,点N的位置是( )
A: |
B: |
C: |
D: |
- 提示1:PHA+54K5QuWSjOeCuUTlhbPkuo5BQ+WvueensDwvcD4=
- 提示2:PHA+5Lik54K55LmL6Ze057q/5q615pyA55+tPC9wPg==
- 答案:RA==
PGRpdj48aW1nIHNyYz0iaHR0cHM6Ly9wMi5xaW5nZ3VvLmNvbS9HMS9NMDAvMUYvRTEvckJBQ0UxTUowUjdqVkVpRUFBQU14U2RVSzNJODY4LnBuZyIgZGF0YS1ja2Utc2F2ZWQtc3JjPSJodHRwczovL3AyLnFpbmdndW8uY29tL0cxL00wMC8xRi9FMS9yQkFDRTFNSjBSN2pWRWlFQUFBTXhTZFVLM0k4NjgucG5nIiBoZWlnaHQ9IjE1MSIgd2lkdGg9IjE2MyI+PC9kaXY+
本课配套习题挑战模式5/5
直线a上有点M,使最小,下列画法正确的是( )
A: |
B: |
C: |
D: |
- 提示1:PHA+5b2TQU09Qk3ml7bvvIzmnInmnIDlsI/lgLwwPC9wPg==
- 提示2:PHA+5Yip55So57q/5q615Lit5Z6C57q/55qE5L2N572uPC9wPg==
- 答案:RA==
PGRpdj48aW1nIHNyYz0iaHR0cHM6Ly9wMi5xaW5nZ3VvLmNvbS9HMS9NMDAvMUYvRTEvckJBQ0UxTUowU0dBOUxkNUFBQUtfQmpxUTNVMDEwLnBuZyIgZGF0YS1ja2Utc2F2ZWQtc3JjPSJodHRwczovL3AyLnFpbmdndW8uY29tL0cxL00wMC8xRi9FMS9yQkFDRTFNSjBTR0E5TGQ1QUFBS19CanFRM1UwMTAucG5nIiBoZWlnaHQ9IjE1MSIgd2lkdGg9IjE4NSI+PC9kaXY+