Circle theorems are properties that are true for all circles, regardless of their size. There are six theorems to learn and recognise.

Use This Simple Trick to Measure an Angle Using Only a Level It's all about the plumb.

An angle is a measure of a turn, measured in degrees or °. There are 360° in a full turn. You can find out the size of an angle using a protractor. An angle less than 90° is acute. An angle ...

case 1In 2D coordinate system the sum of the angles of all quadrants=360 degree= 2pi radianin (x,y) planeCase 2In 3D coordinate system (x,y,z) I took 3 possible planesi.e.(x,y) (y,z) (x,z)each ...