Chop the cucumber into ¼ inch rounds and then slice each round in half to create a half moon shape.
Using a serrated knife, cut each tomato into 8 sections. Cut the red onion into thin slices.
Combine the red wine vinegar, olive oil, and salt in a small bowl. Whisk to combine.
Place the cucumber slices, tomato slices, and red onion slices on a serving platter. Crumble the feta into bite size pieces if it’s not already crumbled. Top with the feta and olives.
Drizzle with the vinegar and oil and then serve.
Notes
If you buy a block of feta instead of crumbles, the leftovers will last longer in the refrigerator. And you can also control the size of the crumbles!Gently slice the tomatoes with a serrated knife to avoid squishing them.You can substitute white wine vinegar for the red wine vinegar, if you wish!