两直线平行英文

这是同位角定理的逆定理,前面还有个前提,就是两条直线与第三条直线相交. 定理英文如下： 同位角定理逆定理[Corresponding Angles Converse Theorem] If two lines are cut by a transversal so that corresponding angles are congruent,then the lines are parallel. 附带给你原定理： 同位角定理[Corresponding Angles Theorem] If two parallel lines are cut by transversal,then the pairs of corresponding angles are congruent.

Two parallel lines never intersect. 两条平行线永不相交。

根号2 square root of 2垂直的 vertical垂直平分线 perpendicular bisector倍 time(s)

parallel lines

two parallel lines will never meet.