The first thing that I thought of for diagonal lines is yachts. I have loads of pictures of yachts in my archive and especially like this first one of moored racing yachts with flags and pennants flying.
Next we go to the Maritime Museum in Sydney I took this one aboard the Endeavour replica sailing ship. I liked the strong lines of the ropes in this. Also in Sydney the sails of the Opera House have interesting curved but kind of diagonal lines.
On a less nautical note but still in Sydney I took this next photo in the Queen Victoria Building. I liked the diagonal patterns of the floor tiles and the escalator does lead your eye to the upper gallery. Last in this group is the building I love to hate in Melbourne’s Federation Square. I hate it because all those jagged lines upset my eyes, to me it looks like nothing on earth but it is interesting to photograph.
For the Gold Star part of the challenge I’ve chosen two photos from Week #2 – pictures with easily identifiable subjects. Punch and Judy at the Botanical Gardens and some lovely bearded irises.