鶹Լ

Mae llinellau paralel bob amser yr un pellter ar wahân ar eu hyd cyfan. Mae llinellau perpendicwlar yn croesi ei gilydd ar ongl sgwâr.

Parallel lines are always the same distance apart for their entire length. Perpendicular lines cross each other at right angles.

More on Siâp, safle a symud

Find out more by working through a topic