1. Create line AC.[br]2. Create a circle with a center at A that goes through C.[br]3. Create point D at the intersection of the circle and line AB.[br]4. Create a circle with a center at C that goes through A.[br]5. Create a circle with a center at D that goes through A.[br]6. At the upper right corner, the circle with center at D through A intersects the circle with center at C through A intersect. Create point E at that intersection.[br]7. Draw line CE.[br][br]Line CE is parallel to line AB.