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命题是学术上的一个名词,不为数学所独有,凡属于判断真假的语句都是命题。命题的第一个特征是具有判断。例1 下列各语句中,哪些是命题,哪些不是命题? (1)如果两个角是对顶角,那么它们相等;
Propositions are a noun in the academic field. They are not unique to mathematics. All statements that are true or false are propositions. The first feature of a proposition is to have judgment. Example 1 Which of the following statements are propositions and which are not propositions? (1) If two angles are diagonal, they are equal;