Angle

Dividing the Circle: The Development of Critical Angular Measurement in Astronomy 1500-1850 (Ellis Horwood Library of Space Science and Space Technology)

Allan Chapman

Paper-Folding: A Book about Right Angles

Jo Phillips

Measurement of Angle in Engineering

National Physical Laboratory

Maneuvers with angles. Teacher sourcebook

David A Page, Philip Wagreich, Kathryn Chval.

The trisection of any rectilineal angle

by Geo. Goodwin.

Angles

by Marion Smoothey ; illustrated by Ted Evans.

Angles 1

Paul Harling.

Mesure des angles, hyperboles étoilées et développante.

Delphin Gautier

Right angles; paper-folding geometry

by Jo Phillips. Illustrated by Giulio Maestro.

Angles 2

Paul Harling.