Radian describes the plane angle subtended by a circular arc as the length of the arc divided by the radius of the arc. One radian is the angle subtended at the center of a circle by an arc that is equal in length to the radius of the circle.
Step 3: Fold the lower left corner up toward the center of the quilt making sure the fold is on the bias. Step 4: Fold the top left corner down toward the center of the quilt making sure the fold is on the bias. Step 5: Making sure the fold is on the bias, fold the top right corner down toward the center of the quilt.
Make sure the quilt is pushed all the way into the binding, but just barely. Let it ride in there easily, not pulled tight or stretched to one side or the other. Sew the binding on along the first edge of the quilt, sewing all the way to the bottom edge. Backstitch and clip your threads. Check the back-the bottom stitching should look nearly the same as the top. Remove the quilt from the machine.