问题
解答题
两条直线互相垂直，它们所组成的角都是90°．______．（判断对错）
答案
由分析得出：两条直线如果互相垂直，则它们一定相交成90゜，
所以上面的说法是正确的．
故答案为：√．
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两条直线互相垂直，它们所组成的角都是90°．______．（判断对错）
由分析得出：两条直线如果互相垂直，则它们一定相交成90゜，
所以上面的说法是正确的．
故答案为：√．
rned around and said, “sorry. The bus has been broken down. Please get off and help push it.” When he heard this, Li Hua and the other passenger got off the bus. They worked hard together, pushed the bus forward. Soon the bus was running again. Both the passengers were smiling and the sun was shining.