11.42.3 Can you answer these questions?

11.42.3.1 Scale, transform shape, and the anchor border

https://tex.stackexchange.com/landing/r/digest?cta=question&id=746435

When a node is scaled with transform shape and scale, the anchor border no longer lines up with the background path. At first I thought this was a bug in my own code, but I now realize that "... 
[tikz-pgf] [tikz-node] [tikz-shape] [anchor]
 

asked by karlh https://tex.stackexchange.com/landing/r/digest?cta=user&id=305442 Score of 4

11.42.3.2 find the coordinate and dimention of equations

https://tex.stackexchange.com/landing/r/digest?cta=question&id=746572

I am trying to get the height of equations in the document. I am using LuaLaTeX. The closest I have come is the following: 
\documentclass{article} 
\usepackage{amsmath} 
\usepackage{luacode} 
\usepackage{... 
[equations] [luatex] [coordinates] [dimensions]
 

asked by Parivalavan https://tex.stackexchange.com/landing/r/digest?cta=user&id=270105 Score of 2

11.42.3.3 How can postscript math operations be included into pstricks commands?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=746669

I want to build a rectangular with an angle arrow using pstricks and psarc. 
The length of the legs are given as defines and the angle should be calculated with postscript math operations. The basic ... 
[pdftex] [pstricks] [postscript]
 

asked by mari https://tex.stackexchange.com/landing/r/digest?cta=user&id=403400 Score of 2

answered by user187802 https://tex.stackexchange.com/landing/r/digest?cta=user&id=187802 Score of 0