Cucumber Salad

Bahan-bahan (4 porsi)

• 3 tablespoons olive oil
• 1 1/2 tablespoons red wine vinegar
• 1 teaspoon garlic (minced)
• 1 teaspoon dried oregano
• 1/4 teaspoon salt
• 1/4 teaspoon pepper
• 2 English cucumbers (sliced)
• 1 avocado (large, sliced)
• 1/2 cup feta cheese (crumbled)
• 1/4 red onion (thinly sliced)