The right angle symbol is used to denote a right angle.
Figure 3-4. Right angles
right angle of 90 degrees icon on white background. Simple element illustration from Shapes concept. right angle of 90 degrees icon symbol design Stock Vector Image & Art - Alamy
List of All Maths Symbols - Geometric, Algebraic, Calculus, Greek
SOLVED: Identify a pair of segments that are marked perpendicular to each other on the diagram below: (Diagram is not to scale:) perpendicular
Untitled document - a summary page on Parallel vs perpendicular - Parallel Lines: Parallel lines are - Studocu
∟ - Right Angle, Unicode Number: U+221F 📖 Symbol Meaning ✂ Copy & 📋 Paste (◕‿◕) SYMBL
What is the right angle symbol? - Quora
Right angle symbol –
Identify Angles of Polygons (Definition, Types and Examples) – BYJUS
Angle Symbol (∠)
Right Angle - Definition, Properties, Shape, Examples
tikz pgf - How to draw the right angle symbol (square) with a dot in the center? - TeX - LaTeX Stack Exchange
Right angle - Wikipedia