中学生网络课堂本课配套习题挑战模式1/5
| A: 80°；20° |
| B: 50°；50°或80°；20° |
| C: 50°；50° |
| D: 20°；100° |
- 提示1：IOiLpeetieiFsOS4ieinkuW9oueahOmhtuinkuS4ujgwwrDml7Y=
- 提示2：IOiLpeetieiFsOS4ieinkuW9oueahOW6leinkuS4ujgwwrDml7Y=
- 答案：Qg==
PGRpdj4xLiDoi6XnrYnohbDkuInop5LlvaLnmoTpobbop5LkuLo4MMKw5pe277yM5Y+m5aSW5Lik5Liq5YaF6KeSPGltZyB3aWR0aD05MiBoZWlnaHQ9NDIgc3JjPSJodHRwczovL3AxLnFpbmdndW8uY29tL0cxL00wMC9GQy9GQS9yQkFDRkZNSjBYZXlWWGg3QUFBQ0tnanoxcG83NzEucG5nIj7CsDwvZGl2PjxkaXY+Mi4g6Iul562J6IWw5LiJ6KeS5b2i55qE5bqV6KeS5Li6ODDCsOaXtu+8jOWug+eahOWPpuWkluS4gOS4quW6leinkuS4ujgwwrDvvIzpobbop5LkuLoxODDCsC04MMKwLTgwwrA9MjDCsDwvZGl2Pg==
本课配套习题挑战模式2/5
等腰三角形的一个外角是140°，此等腰三角形的三个内角的度数分别是( )
| A: 50°，50°，80°或30°，30°，120° |
| B: 40°，70°，70°或40°，40°，100° |
| C: 50°，50°，80°或60°，60°，60° |
| D: 40°，70°，70°或50°，50°，80° |
- 提示1：PHA+5piv6aG26KeS55qE5aSW6KeSPC9wPg==
- 提示2：PHA+5piv5bqV6KeS55qE5aSW6KeSPC9wPg==
- 答案：Qg==
PGRpdj7lvZPmmK/pobbop5LnmoTlpJbop5Lml7bvvIzpobbop5LluqbmlbAxODDCsC0xNDDCsD00MMKw77yM5bqV6KeSNzDCsDwvZGl2PjxkaXY+5b2T5piv5bqV6KeS55qE5aSW6KeS5pe277yM5bqV6KeS5bqm5pWwMTgwwrAtMTQwwrA9NDDCsO+8jOmhtuinkuW6puaVsDEwMMKwPC9kaXY+
本课配套习题挑战模式3/5
等腰三角形一腰上的高等于腰的一半，那么这个等腰三角形各内角的度数为( )
| A: 130°，25°，25°或30°，75°，75° |
| B: 150°，15°，15°或30°，75°，75° |
| C: 150°，15°，15°或40°，70°，70° |
| D: 80°，50°，50°或90°，45°，45° |
- 提示1：PHA+4pGgIOW9k+KWs0FCQ+aYr+mUkOinkuS4ieinkuW9ouaXtu+8mzwvcD4=
- 提示2：PHA+4pGh5b2T4pazQUJD5piv6ZKd6KeS5LiJ6KeS5b2i5pe2PC9wPg==
- 答案：Qg==
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
本课配套习题挑战模式4/5
| A: 30° |
| B: 75° |
| C: 30°或75° |
| D: 30°或100° |
- 提示1：IOiuvumhtuinkueahOW6puaVsOaYrzJ4wrDvvIzlupXop5LnmoTluqbmlbDmmK81eMKw
- 提示2：IOiuvumhtuinkueahOW6puaVsOaYrzV4wrDvvIzlupXop5LnmoTluqbmlbDmmK8yeMKw
- 答案：RA==
PGRpdj7ikaDorr7pobbop5LnmoTluqbmlbDmmK8yeMKw77yM5YiZ5pyJ77yaMngrNXgrNXg9MTgw77yM6Kej5b6X77yaeD0xNe+8jOaJgOS7pemhtuinkuW6puaVsOaYr++8mjJ4PTMw77ybPC9kaXY+PGRpdj7ikaHorr7pobbop5LnmoTluqbmlbDmmK81eMKw77yM5YiZ5pyJ77yaNXgrMngrMng9MTgw77yM6Kej5b6X77yaeD0yMO+8jOWImeacie+8mumhtuinkuW6puaVsOaYr++8mjV4PTEwMDwvZGl2Pg==
本课配套习题挑战模式5/5
已知等腰三角形一边上的高线等于某边的一半，则该等腰三角形的顶角的度数为( )度.
| A: 20或50或150或160 |
| B: 30或100或120或150 |
| C: 30或90或120或150 |
| D: 40或90或110或150 |
- 提示1：PHA+5LiJ6KeS5b2i5piv6ZSQ6KeS5LiJ6KeS5b2i5pe2PC9wPg==
- 提示2：PHA+5LiJ6KeS5b2i5piv55u06KeS5LiJ6KeS5b2i5pe2PC9wPg==
- 提示3：PHA+5LiJ6KeS5b2i5piv6ZKd6KeS5LiJ6KeS5b2iPC9wPg==
- 答案：Qw==
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
