mathematics - What's the word for the small square indicating a right angle in a geometric figure? - English Language & Usage Stack Exchange
I'm talking about something in geometry notation and/or drafting, I think. It's the mini right-angle shape you can draw within an angle to indicate that it's ninety degrees. E.g., the mark denoting
The Semiotic Structure of Geometry Diagrams: How Textbook Diagrams Convey Meaning - National Council of Teachers of Mathematics
Trademarks Journal Vol. 69 No. 3532
Right Angle - Definition, Properties, Shape, Examples
Why is Pythagoras'/Pythagorean theorem for 'Isosceles Standard/Right Triangle (IST)' suitable and actually provable from theoretical geometric perspective, but not factually suitable and provable from algebraic and practical holistic perspective? - Quora
60-odd YEARS of MOSCOW MATHEMATICAL OLYMPIADS
Help:Displaying a formula - Wikipedia
Systems, Free Full-Text
The Semiotic Structure of Geometry Diagrams: How Textbook Diagrams Convey Meaning - National Council of Teachers of Mathematics
Why are angles in a square right angles? - Quora
