Read · 1 min
Euclid's definition of an angle was stated in his definitions section of his "Elements".
Definition: A plane angle is the inclination to one another of two lines in a plane which meet one another and do not lie in a straight line.
Read · 1 min
Euclid's definition of an angle was stated in his definitions section of his "Elements".
Definition: A plane angle is the inclination to one another of two lines in a plane which meet one another and do not lie in a straight line.