Introduction to...

“Lines are parallel if they do not intersect” is stated in the form of

The edges of a surface are

The boundaries of the solids are

If the point P lies in between M and N, C is the mid-point of MP then

Axioms are assumed

“Two intersecting lines cannot be parallel to the same line” is stated in the form of

The things which coincide with one another are

Euclid stated that if equals are added to equals, the wholes are equal in the form of

Euclid stated that if equals are subtracted from equals, the remainders are equal in the form of

The number of line segments determined by three non-collinear points is