{ "item_title" : "The Diagram", "item_author" : [" Adam Tetlow "], "item_description" : "How do you divide a line into three? Or five? Or seven? Is there a simple way to marry harmony and geometry? What is the secret diagram alluded to by writers of antiquity? In this groundbreaking book, philosopher Adam Tetlow reveals the long-lost Helicon, the master diagram of the ancient arts and crafts. Watch in astonishment as this magical geometric figure produces simple fractions, musical harmonies, Pythagorean triangles, perspective, and more.", "item_img_path" : "https://covers3.booksamillion.com/covers/bam/1/95/217/829/1952178290_b.jpg", "price_data" : { "retail_price" : "8.95", "online_price" : "8.95", "our_price" : "8.95", "club_price" : "8.95", "savings_pct" : "0", "savings_amt" : "0.00", "club_savings_pct" : "0", "club_savings_amt" : "0.00", "discount_pct" : "10", "store_price" : "" } }

Overview

Customers Also Bought

Details