1/5单选题
难度：
1.如图，将△AOB绕点O按逆时针方向旋转45°后得到△A′OB′，若∠AOB=15°，则∠AOB′的度数是（ ）
| A | 25° |
| B | 30° |
| C | 35° |
| D | 40° |
- 提示1：
- IOagueaNruaXi+i9rOeahOaAp+i0qOaXi+i9rOWJjeWQjuWbvuW9ouWFqOetieS7peWPiuWvueW6lOi+ueeahOWkueinkuetieS6juaXi+i9rOinku+8jOi/m+iAjOW+l+WHuuetlOahiOWNs+WPrw==
正确答案：Qg==
PGRpdj7op6PvvJriiLXlsIbilrNBT0Lnu5XngrlP5oyJ6YCG5pe26ZKI5pa55ZCR5peL6L2sNDXCsOWQjuW+l+WIsOKWs0HigLJPQuKAsu+8jDxicj7iiLTiiKBB4oCyT0E9NDXCsO+8jOKIoEFPQj3iiKBB4oCyT0LigLI9MTXCsO+8jDxicj7iiLTiiKBBT0LigLI94oigQeKAsk9BLeKIoEHigLJPQuKAsj00NcKwLTE1wrA9MzDCsDwvZGl2Pg==
2/5单选题
难度：
2.
如图，∠AOB=90°，∠B=30°，△A′OB′可以看作是由△AOB绕点O顺时针旋转α角度得到的. 若点A′在AB上，则旋转角α的大小可以是（ )
| A | 30° |
| B | 45° |
| C | 60° |
| D | 90° |
- 提示1：
- PHA+5qC55o2u5peL6L2s55qE5oCn6LSo77ya5peL6L2s5Y+Y5YyW5YmN5ZCO77yM5Zu+5b2i55qE5aSn5bCP44CB5b2i54q26YO95LiN5pS55Y+Y77yM6L+b6KGM5YiG5p6QPC9wPg==
正确答案：Qw==
PGRpdj7op6PvvJriiLXiiKBBT0I9OTDCsO+8jOKIoEI9MzDCsO+8jDxicj7iiLTiiKBBPTYwwrAuPGJyPuKIteKWs0HigLJPQuKAsuWPr+S7peeci+S9nOaYr+eUseKWs0FPQue7leeCuU/pobrml7bpkojml4vovazOseinkuW6puW+l+WIsOeahO+8jDxicj7iiLRPQT1PQeKAsi48YnI+4oi04pazT0FB4oCy5piv562J6L655LiJ6KeS5b2iLjxicj7iiLTiiKBBT0HigLI9NjDCsO+8jOWNs+aXi+i9rOinks6x55qE5aSn5bCP5Y+v5Lul5pivNjDCsDwvZGl2Pg==
3/5单选题
难度：
3.
如图，在△ABC中，∠CAB=75°，将△ABC绕点A旋转到△AB′C′的位置，使得CC′∥AB，则∠BAB′=（ ）
| A | 30° |
| B | 35° |
| C | 40° |
| D | 50° |
- 提示1：
- PHA+5qC55o2u5peL6L2s55qE5oCn6LSo5Y+v5b6XQUM9QUPigLLvvIziiKBCQUM94oigQuKAskFD4oCy77yM5YaN5qC55o2u5Lik55u057q/5bmz6KGM77yM5YaF6ZSZ6KeS55u4562J5rGC5Ye64oigQUND4oCyPeKIoENBQu+8jOeEtuWQjuWIqeeUqOetieiFsOS4ieinkuW9ouS4pOW6leinkuebuOetieaxguWHuuKIoENBQ+KAsu+8jOWGjeaxguWHuuKIoEJBQuKAsj3iiKBDQUPigLLvvIzku47ogIzlvpfop6MuPC9wPg==
正确答案：QQ==
PGRpdj7op6PvvJriiLXilrNBQkPnu5XngrlB5peL6L2s5Yiw4pazQULigLJD4oCy55qE5L2N572u77yMPGJyPuKItEFDPUFD4oCy77yM4oigQkFDPeKIoELigLJBQ+KAsu+8jDxicj7iiLVDQ+KAsuKIpUFC77yM4oigQ0FCPTc1wrDvvIw8YnI+4oi04oigQUND4oCyPeKIoENBQj03NcKw77yMPGJyPuKItOKIoENBQ+KAsj0xODDCsC0y4oigQUND4oCyPTE4MMKwLTLDlzc1wrA9MzDCsO+8jDxicj7iiLXiiKBCQULigLI94oigQkFDLeKIoELigLJBQ++8jDxicj7iiKBDQUPigLI94oigQuKAskFD4oCyLeKIoELigLJBQ++8jDxicj7iiLTiiKBCQULigLI94oigQ0FD4oCyPTMwwrA8L2Rpdj4=
4/5单选题
难度：
4.
如图，点O是等边△ABC内一点，∠AOB=110°，∠BOC=145°. 将△BOC绕点C按顺时针方向旋转60°得△ADC，连接OD. 则∠AOD=（ ）
| A | 40° |
| B | 45° |
| C | 50° |
| D | 55° |
- 提示1：
- PHA+5qC55o2u5peL6L2s55qE5oCn6LSo5Y+v5Lul6K+B5b6X4pazT0NE5piv562J6L655LiJ6KeS5b2i77yM5Y+v6K+B5b6X4oigRE9DPTYw77yM5Y2z5Y+v5rGC6KejLjwvcD4=
正确答案：Qg==
PGRpdj7op6PvvJriiLVPQz1DRO+8jOKIoE9DRD02MMKw77yMPGJyPuKItOKWs09DROaYr+etiei+ueS4ieinkuW9ou+8jDxicj7iiLTiiKBET0M9NjDCsO+8jDxicj7iiLTiiKBBT0Q9MzYwwrAtMTEwwrAtMTQ1wrAtNjDCsD00NcKwPC9kaXY+
5/5单选题
难度：
5.
如图，P为正方形ABCD内一点，PA=1，PB=2，PC=3，以点B为旋转中心，将△ABP顺时针旋转，使点A与点C重合，这时P点旋转至G点，试画出旋转后的图形，求∠APB=( )
| A | 125° |
| B | 135° |
| C | 145° |
| D | 150° |
- 提示1：
- PHA+5qC55o2u5peL6L2s55qE5oCn6LSo77yMQ0c9UEHvvIxCRz1QQu+8jOWGjeWIpOaWreWHuuKWs1BCR+aYr+etieiFsOebtOinkuS4ieinkuW9ou+8jOeEtuWQjuWIqeeUqOWLvuiCoeWumueQhuWIl+W8j+axguWHulBH77yM5YaN5Yip55So5Yu+6IKh5a6a55CG6YCG5a6a55CG5Yik5pat5Ye64pazUENH5piv55u06KeS5LiJ6KeS5b2i77yb5YWI5rGC5Ye64oigQkdD55qE5bqm5pWw77yM54S25ZCO5qC55o2u5peL6L2s5Y+Y5o2i5Y+q5pS55Y+Y5Zu+5b2i55qE5L2N572u5LiN5pS55Y+Y5Zu+5b2i55qE5b2i54q25LiO5aSn5bCP5Y+v5b6X4oigQVBCPeKIoEJHQ+WNs+WPr+W+l+inoy48L3A+
正确答案：Qg==
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