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.
Pin the border strips to the raw edges of your quilt, right sides together. The strips should extend an equal distance past the quilt edge on each side. Stitch the border strips to the raw edges of your quilt using a 1/4-inch seam allowance. Begin and end stitching 1/4 inch from the edges of the quilt at the corners and be sure to backstitch to secure your seam.