Teachables Whiteboard Set Squares - PairThis Set Square Pair is ideal for large scale classroom demonstrations of geometric concepts, particularly angle measurement and shape construction. The set includes two durable set squares in the common classroom angles of 45 x 45 x 90 and 30 x 60 x 90 , making them perfect for teaching properties of triangles and identifying angle relationships. Measuring between 500 mm and 580 mm, these oversized tools ensure visibility from across the room.: Each