Quesiton : How many degrees in a right angle?
Answer: 90
How many degrees in a right angle?
Trigonometry is a branch of mathematics that studies relationships involving lengths and angles of triangles. The field emerged in the Hellenistic world during the 3rd century BC from applications of geometry to astronomical studies.
How can the answer be improved?
Right triangle - Wikipedia
How to Use a Protractor - Drawing an Angle with a Protractor
How to Use a Protractor: 8 Steps (with Pictures) - wikiHow
What does a 90 Degree Angle Look Like? | Math

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