1) Use the angles [icon]/images/ggb/toolbar/mode_anglefixed.png[/icon] button to measure the angles of both triangles.[br][br]2) Drag the vertices of the triangles to make them similar. [br]The pictures will be transformed accordingly.

J, K and L are free points, but you can enter in the input field, J=M' (or K=N', L=O') to make the triangles similar. Undo this step to free the points again.