: Measure the distance between your two marks. If it is exactly 5 units , your corner is perfectly square. 4. Technical & Gaming "345" Guides
: Apply as the final moisturizing step or as a hydrating base before makeup.
This classic geometric rule ensures corners are perfectly "square" (90 degrees).
Since "345" refers to several popular concepts, the , the 345 Skincare Routine , and the 3-4-5 Rule for Construction . 1. The 3-4-5 Interior Design Method