Treatise on Elementary Geometry

ABCD adjacent altitude base bisects BOOK called centre chord circle circumference circumscribed coincide common cone consequently construct contained Corollary cylinder Definition describe diagonal diameter diedral angle difference distance divided draw drawn edges equal equivalent Exercise extremities faces fall feet figure follows formed four given circle given line given point given straight line greater half Hence hypotenuse increased indefinitely inscribed intersection joining lateral length less limit locus mean measure meet middle point number of sides one-half opposite parallel parallelogram pass perimeter perpendicular placed plane polygon prism problem proportional Proposition XIV prove pyramid radii radius ratio rectangle regular regular inscribed regular polygon respectively right angles right triangle Scholium segments sides similar sphere spherical square Suggestion surface tangent Theorem third triangle triangle ABC unit vertex vertices volume