Masks - How to Draw a Perfectly Square Mask

[edit58989569]

Premiere 23.5

I want to make a perfectly square mask. The user guide says to hold shift to create perfect 0,45, 90 degree angles. 

If start with the square tool it's not a perfect square. If I select shift on the vortex points it doesn't adjust them accordingly. 

How do I draw a square with the mask tool? 

[Ann Bens · Accepted solution]

Drawing angles with Shift does not work correctly: horizontal, its not straight.

This issue has been around for a long time and still not fixed,

The only way to make a perfect square is to make a rectangular in the EGP while holding down shift.

Then draw over this square a mask from opacity with the pentool.

Or make a square with the guides and draw with the Pentool.

[Ann Bens]