In thiis activity, you will see the relationship between 2 parallel lines and their gradients[br][br]For simplicity the equations of the lines you draw have already been given automatically.

Drag points A, B for the first line and points CD for the second line.[br]Observe the changes in angles alpha and beta.[br]How do you make both lines parallel ? (Recall your knowledge of corresponding angles of parallel lines)[br]Observe the gradient of line AB, ie. m1 and gradient of line CD ie m2[br]Are they the same when the lines AB and CD are parallel?