Ninety Degrees
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90°
it measures 360 degrees
A 'right angle' looks like a corner, and measures 90 degrees.
Spheres are measured with solid angles (which are like two dimensional angles). These angles can be measure with square degrees or steradians. A sphere measures 129300/π square degrees (or about 41,253 square degrees). A sphere measures 4π steradians (or about 12.566 steradians.)
There would be twelve angles in all: six each of two complementary measures (or 12 right angles).