Elements of Geometry: Being Chiefly a Selection from Playfair's Geometry

ABC is equal ABCD angle ABC angle BAC arch base bisect BOOK called centre chord circle circumference coincide common cone Consequently cylinder demonstrations described diagonals diameter difference distance divided draw drawn equal angles equal bases equiangular exterior angle extremities figure follows fore geometry given straight line gles greater half Hence interior intersect join less Let ABC magnitude manner mean meet opposite opposite angles opposite side paral parallel parallelogram pass perp perpendicular plane polygon prism PROBLEM produced Prop proportional PROPOSITION proved pyramid Q. E. D. Cor quantities radius ratio rectangle contained remaining respects right angles segments side AC sides similar solid square stand surface tangent THEOREM third triangle ABC wherefore whole