The Elements of Plane and Solid Geometry

ABCD acute angles adjacent angle BAC applied base BC is equal bisects called centre chords circle circumference coincides common construction containing Corollary DEFINITION described diameter difference dihedral angle distance divided double draw drawn equal equal angles EXAMPLES extremities figure follows four given circle given plane given point given straight line greater half inscribed interior angles intersection join length less Let ABC line joining locus magnitudes measure middle point multiple opposite sides pair parallel parallelogram passing perpendicular plane polygon portion position possible PROBLEM produced Prop PROPOSITION Prove radius ratio rectangle remaining respectively respectively equal right angles segment sides similar Similarly situated space square subtended surface taken tangent third touch triangle ABC triangle DEF