90 Degree Angle – Measurement, Definition With Examples
https://brighterly.com/math/90-degree-angle/
webDec 21, 2023 · A 90-degree angle, also known as a right angle, is an angle formed when two straight lines intersect perpendicularly to each other, creating an “L” shape. It measures exactly 90 degrees. The term “right” indicates the conventional rectangular (or “right-angled”) system of coordinates, which forms the basis for Euclidean geometry.
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