# perpendicular line problem.

Nicholasfox shared this question 4 months ago
Answered

1. There's a triangular pyramid DABC, Why is the perpendicularline(C, faceABD) not perpendicular to the plane ABD?

2. How to use variables like "faceABD"?

## Comments (6)

2

SetAxesRatio(1,1,1)

1

Uh... It makes me look stupid.

Is there a more direct way to lock the axes ratio to 1:1:1?

1

How to get a segment DE that is perpendicular to segment AB in faceABD? Thanks.

1

Segment(D, Intersect(Line(A, B), PerpendicularPlane(D, Line(A, B))))

1

Thank you.

Hope there's a "lock axes ratio" option in setting dialog, and a function likes PerpendicularLine(Point(A), line(B,C)) works for plane ABC.

1

while editing not, when you upload to resource you can see advanced tab

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