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Q: Who invented half circle full circle half circle A half circle full circle right angle A?

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No, it's 90. A right angle is 25% of a full circle, (or 1/4 of a circle) ......... if a full circle is 360 degrees around, then a right angle, being 1/4 of that, must be 90 degrees.

There are 90o in a right angle. A right angle is one-quarter of a full circle i.e. 360o.

There are 90o in a right angle. A right angle is one-quarter of a full circle i.e. 360o.

A 'right' angle isThere are 90o in a right angle. A right angle is one-quarter of a full circle i.e. 360o.=

There are 90 degrees in a right angle There are 180 degrees on a straight line There are 360 degrees in a full circle

no,

It was the ancient Babylonians and Greeks who classified angles into degrees out of 360 degrees which is full rotation of circle.

The right angle of a right-angle triangle, like all right angles, is 90 degrees or one quarter of 360 (a full circle). All the angles of any triangle will add up to 180 degrees.

No. A full angle is a segment of a line which goes to a vertex and returns along the same path. Any point on the line segment, other than the vertex, will trace out a circle but the angle itself is NOT a circle.

All right angles measure 90 degrees, that is, one-quarter of a full circle. If the angle doesn't measure 90 degrees it isn't a right angle; all right angles are identical.

An angle whose measure is 76/360 of a full circle.

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