Speed squares are a helpful saw guide for cutting 45- and 90-degree ... being marked is a 33-1/2 degree angle. The Swanson ...

STEP 1: This is what to do when you know the length of 1 side and the 2 angles at each end of it: here 8 cm, 40° and 50°. Draw an 8 cm line using a pencil and ruler. Place the centre of the ...