Set squares are drawing instruments used to create vertical, horizontal, and diagonal lines as well as certain angles. They may be shaped as squares, Ls, or triangles, although in American usage set ...

Draw the given side of the triangle using a ruler. Use a protractor to measure the angle from the left-hand endpoint of the given side, mark it with a cross and draw a line from the endpoint ...

Image caption, ...and draw another diagonal line to join the points and mark the angles inside the triangle. Use the scissors to cut the triangle out. STEP 4: Place two of the triangles along the ...