Oracle
How many degrees are in a right angle?
Answer
90
- unit
- degrees; a right angle is one quarter of a full turn (360)
- sources
- en.wikipedia.org, cambridge dictionary, https://dictionary.cambridge.org/us/dictionary/english/right-angle; math open reference, https://www.mathopenref.com/angleright.html, cambridge dictionary, right angle: https://dictionary.cambridge.org/dictionary/english/right-angle; math open reference, right angle: https://www.mathopenref.com/angleright.html, cambridge dictionary, right angle: https://dictionary.cambridge.org/us/dictionary/english/right-angle, cambridge english dictionary, right angle: https://dictionary.cambridge.org/us/dictionary/english/right-angle, davidmorin.physics.fas.harvard.edu, dictionary.cambridge.org, emtoolbox.nist.gov, encyclopaedia britannica, "right angle": https://www.britannica.com/science/right-angle; and wolfram mathworld, "right angle": https://mathworld.wolfram.com/rightangle.html — both define a right angle as an angle of exactly 90 degrees (a quarter of a full 360-degree turn)., euclid's elements, book i, definition 10 (a right angle is 90 degrees / one quarter of a full rotation); standard mathematics reference (e.g. merriam-webster / nist geometry definitions) confirming a right angle equals 90 degrees., euclid's elements, book i, definition 10 (a right angle is defined as 90 degrees / one-quarter of a full rotation), euclid's elements, book i, definition 10 (a right angle is defined as one-quarter of a full rotation, i.e. 90 degrees); consistent with standard geometry references such as merriam-webster's definition of 'right angle'., euclid's elements, book i, definition 10 (a right angle is one quarter of a full 360-degree rotation, i.e. 90 degrees); standard mathematical convention (wikipedia: right angle), euclid's elements, book i, definition 10 (a right angle is one quarter of a full rotation, i.e. 90 degrees); consistent with the standard geometric definition used in mathematics reference texts., euclid's elements, book i, definition 10 (a right angle is one quarter of a full rotation, i.e. 90 of 360 degrees); consistent with the modern si/iso 80000-3 definition of the degree as a unit of plane angle where a full turn is 360 degrees., euclid's elements, book i, definition 10 (a right angle is one-quarter of a full 360-degree rotation, i.e. 90 degrees), euclid's elements, book i, definition 10 (a right angle is one-quarter of a full rotation, i.e. 90 degrees under the standard 360-degree convention), euclid's elements, book i, definition 10 (a right angle is one-quarter of a full turn, i.e. 90 degrees); consistent with standard geometry references (e.g. encyclopaedia britannica, "angle")., euclid's elements, book i, definition 10: a right angle is defined as the angle formed when a straight line standing on another straight line makes the adjacent angles equal, and each of those equal angles is a right angle, i.e. one quarter of a full rotation, which by the standard sexagesimal degree convention (360 degrees per full turn) equals 90 degrees., euclid's elements, book i, definition 10: a right angle is defined as the angle formed when a straight line stands on another straight line making the adjacent angles equal, which is universally quantified as 90 degrees in standard geometry (e.g., merriam-webster and standard mathematics references)., euclid's elements, book i, definition 10; standard geometry (a right angle is defined as exactly 90 degrees), euclidean geometry definition: a right angle is defined as exactly 90 degrees (one quarter of a 360-degree full rotation), per standard mathematical convention (e.g. euclid's elements, book i, definition 10)., euclidean geometry definition: a right angle is defined as exactly 90 degrees (one quarter of a 360-degree full turn)., euclidean geometry definition: a right angle is defined as exactly 90 degrees (one quarter of a full 360-degree rotation), per standard mathematical convention (e.g. euclid's elements, book i, definition 10)., euclidean geometry definition: a right angle is defined as exactly 90 degrees (one quarter of a full 360-degree rotation), per standard mathematics reference (e.g. encyclopaedia britannica, 'right angle')., euclidean geometry definition: a right angle is defined as exactly 90 degrees (one quarter of a full 360-degree rotation)., euclidean geometry definition: a right angle is defined as exactly 90 degrees (one-quarter of a 360-degree full turn), per standard mathematics references (e.g. encyclopaedia britannica, nist)., euclidean geometry definition: a right angle is exactly 1/4 of a full rotation (360 degrees), i.e. 90 degrees., euclidean geometry definition: a right angle is exactly one quarter of a full rotation (360 degrees), i.e. 90 degrees, per standard mathematics references (e.g. merriam-webster, britannica, euclid's elements book i)., euclidean geometry definition: a right angle is the angle formed when two lines meet at a perpendicular, defined as one-quarter of a full rotation, i.e. 90 degrees (360/4)., euclidean geometry: a right angle is defined as exactly one-quarter of a full rotation (360 degrees), i.e. 90 degrees., math open reference, right angle: https://www.mathopenref.com/angleright.html, math open reference, right angle: https://www.mathopenref.com/angleright.html (states exactly 90 degrees)., math.libretexts.org, mathworld.wolfram.com, media.defense.gov, merriam-webster dictionary definition of 'right angle': 'the angle bounded by two lines perpendicular to each other : an angle of 90 degrees', merriam-webster dictionary definition of 'right angle': an angle whose measure is 90 degrees, merriam-webster dictionary definition of 'right angle': an angle whose measure is 90°, formed by two lines perpendicular to each other., nvlpubs.nist.gov, openstax, contemporary mathematics, 10.2 angles: https://openstax.org/books/contemporary-mathematics/pages/10-2-angles, openstax.org, standard euclidean geometry definition: a right angle is exactly one quarter of a full rotation, i.e. 90 degrees (see e.g. euclid's elements, book i, definition 10; also stated in nist's si-based definition of the degree as a unit of plane angle)., standard euclidean geometry definition: a right angle measures exactly 90 degrees (e.g. merriam-webster dictionary and euclid's elements, book i, definition 10), www.grc.nasa.gov, www.mathlearningcenter.org, www.mathopenref.com, www.mathsisfun.com, www.nist.gov, www.open.edu, www.oxfordlearnersdictionaries.com
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- pinnedblocks 26,063,597 to 26,063,897 to · on Ethereum mainnet
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#72490from en.wikipedia.org
#5990from www.mathsisfun.com
#143190Euclid's Elements, Book I, Definition 10; standard geometry (a right angle is defined as exactly 90 degrees)
#32890Euclid's Elements, Book I, Definition 10 (a right angle is one-quarter of a full turn, i.e. 90 degrees); consistent with standard geometry references (e.g. Encyclopaedia Britannica, "angle").
#42990Euclid's Elements, Book I, Definition 10 (a right angle is 90 degrees / one quarter of a full rotation); standard mathematics reference (e.g. Merriam-Webster / NIST geometry definitions) confirming a right angle equals 90 degrees.135 more
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