Pre-heat the oven to 200ÂșC and place a rack on the middle shelf.
Unroll a filo pastry street and cut lengthwise into 4 strips, each about 10 cm wide.
For each filo triangle, unwrap and place a cheese wedge on the bottom left corner of one filo strip.
Bring the lower left-hand corner of the strip up and to the right diagonally so the bottom edge of the strip lines up with the right side of the strip, creating a triangle.
Fold the pocket upwards and then to the left and so on, as you would fold a flag. Place on a rimmed baking sheet.
Repeat with the remaining filo pastry sheets and cheese wedges.