This project supports the Scratch Maths Copybook for 3rd and 4th Class pages 32 and 33. See inside and find out how the Duck can say the type of angle you have input. Click the green flag and input any angle from 0° to 360°.
The Duck sprite has been edited in the Costumes Editor to move its arms and make an angle between them. The near arm is a sprite in itself. The red line is also a sprite that stamps the fixed lines of the angle and rotates itself to make the input angle. The angle rotates clockwise. See also https://scratch.mit.edu/projects/237790362