描述
(a) 45o Length of hypotenuse about 45cm. Provided with/without handle and with centimetre graduations on one edge. Corners are slightly rounded for safety, made of plastic.
(b) 60o Similar to (a), but having angles of 90o, 60o, ’30o. Length of hypotenuse about 50cm. Longest non-hypotenuse side.
