Question

a part of the geometric construction for drawing a perpendicular to line m from a point a not on the line is shown. which next step can be used to complete the construction? join point x and point a join point y and point a join point z and point x join point a and point z

Explanation:

在从直线外一点作直线垂线的几何作图中，当前已得到点\(X\)、\(Y\)、\(Z\)，下一步应连接点\(A\)和点\(Z\)，这条连线就是所求的垂线。

Answer:

Join Point \(A\) and Point \(Z\)