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.
Begin Rotary Cutting the Strips. Rotary cut the fabric strips required for the project from the quilting fabric's squared-up edge. For example, if you need a 3 wide strip, align the 3 mark on the ruler with the left edge of the fabric.Align a horizontal line near the bottom of the ruler with the fold.he instructions for most quick-pieced quilt patterns tell you to rotary cut long strips from selvage to selvage -- across the fabric's crosswise grain, and that's what we'll cover in this tutorial.