EZ Quilting by Wrights Companion Angle Triangle Ruler by Darlene Zimmerman 882670139 Companion to Easy Angle and Easy Eight. Triangles are cut with the longest edge on the straight of grain. Cut trapezoids of many sizes. Cut 1in to 10in triangles. Cuts half block triangles for small blocks set on point. Built in 1/4in seam allowance. Ideal for use with a rotary cutter.