@fruitjelly said:
Then again, if ultimately, we want a equilateral triangle with for example 1m on each side.... We have to use maths...
No we don't - we use the Tape measure tool. Make a triangle of any size, measure the side, and type the length you want, and press Enter. SU asks if you eant to resize the model, click OK, and you are done. If you have other things in your model that you don't want resized, group the triangle, and do the trick inside the group.
Anssi
