11.两条直线被第三条直线所截,下列各组角中一定相等的是( )
0 309121 309129 309135 309139 309145 309147 309151 309157 309159 309165 309171 309175 309177 309181 309187 309189 309195 309199 309201 309205 309207 309211 309213 309215 309216 309217 309219 309220 309221 309223 309225 309229 309231 309235 309237 309241 309247 309249 309255 309259 309261 309265 309271 309277 309279 309285 309289 309291 309297 309301 309307 309315 366461
| A. | 同位角 | B. | 内错角 | C. | 对顶角 | D. | 同旁内角 |