This book can only be completed if the reader engages with the art as guided by the artist. To begin, two wooden pegs are affixed to the wall, and a clasp is attached to the upper center of the line, referred to as the 'apex.' Within the book, Miguel explores the technical and functional aspects of 'angles,' which are essential to the practice of painting. While the concept of angles plays a vital role, particularly in relation to perspective, this focus has been subtly woven into the background of the work. Although the history of perspective is often traced back to ancient Greece in the 5th century BCE, there is no evidence that Hellenistic painters fully understood the mathematical principles for accurate representation. Nevertheless, they managed to create compelling illusions of depth in their artwork. This piece argues that elements traditionally foundational to art were made explicit, transforming them into significant and independent components. Red AngleMiguel Ângelo Martins RAUM Editions, 2018 Box: 170 x 125 x 30mm / Booklet: 112 x 418mm, Spanish & English Risograph 1-ink (red)Red elastic band cord held, metal split-pins, wooden dowels, screw wall plug and square bend screw hookSigned edition of 40 ISBN 978-989-33-3534-5