如图,CD//AF,∠CDE=∠BAF,AB垂直BC,∠C=124°,∠E=80°。求∠F的度数。

如图,CD//AF,∠CDE=∠BAF,AB垂直BC,∠C=124°,∠E=80°。求∠F的度数。... 如图,CD//AF,∠CDE=∠BAF,AB垂直BC,∠C=124°,∠E=80°。求∠F的度数。 展开
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2010-04-02
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When boys and girls love boys for girls folded 1000 paper cranes hanging in the girl's room. Boys to girls, this 1000 paper cranes, on behalf of my mind a thousand copies. At that time, boys and girls, and obviously feeling the love in the sweet and happiness.

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many years have passed, with the help of friends and his own efforts, he finally had his own company. He was rich,omega watches, but his heart is still obsessed girl.

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girl's parents told the boy, the girl did not go to Paris, the girl suffering from cancer, girls go to heaven. Girls and boys want to be able to succeed,Replica Handbags, to have a warm home, so girl and she has to make such a move. She said she know the boy that he will succeed. Girl said: If one day the boy to the cemetery to see her, please bring a few paper cranes in any case. The boy knelt, kneeling on the girl's grave, burst into tears. Ching Ming Festival, rain do not know to stop, the boy had a thorough shower. Many years ago, girls and boys thought of the smiling faces of innocence, the boy's heart began to see a down bleeding episodes.

This is a time when the elderly out of the cemetery and saw the boy standing not far from the door Audi has been opened for the elderly. Car audio, heard a plaintive singing, "My heart, do not regret it, and repeatedly are aimed at you, Qian Zhihe,cheap gucci handbags, thousands of copies of love, flying in the wind ... ..."
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由CD∥AF,可得∠A+∠B+∠C=360°,∠D+∠E+∠F=360° (你可以分别过点B,E作直线平行于CD,就可以证明它们) ∴∠A+∠B+∠C=∠D+∠E+∠F,∠B+∠C=∠E+∠F 再把∠B=90°,∠C=124°,∠E=80°代入,得∠F=134°
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