Elements of Geometry: With Practical Applications Designed for Beginners

ABCD altitude angle base bisect called centre chord circ circle circumference circumscribed coincide common cone consequently construction contained convex corresponding cutting cylinder described diagonal diameter difference direction distance divided double draw equal equilateral equivalent exterior angle extremity figure follows formed four given gives greater hence included inscribed interior intersection join length less lines drawn magnitude manner mean measured measured by half meet multiplied namely opposite parallel parallel lines parallelogram parallelopipedon passing perpendicular plane pole polygon portion position prism PROBLEM produced Prop proportional PROPOSITION pyramid radii radius ratio reason rectangle regular remain respectively right-angles sector shown similar solid angle sphere spherical square straight line suppose surface taken tangent THEOREM third triangle ABC vertex vertices VIII whole