Elements of Geometry and Trigonometry

ABCD altitude base called centre chord circle circumference circumscribed coincide common complement cone consequently construct corresponding cosine cotangent cylinder denote described diameter difference distance divided draw drawn edges equal Equation extremity faces feet figure formed Formula four frustum functions given greater half hence homologous included inscribed intersection less logarithm manner mean measured meet multiplied OPERATION opposite parallel parallelogram parallelopipedon pass perpendicular placed plane pole polyedron polygon position principle prism proportional PROPOSITION proved pyramid quadrant radii radius rectangle regular remaining right angles Scholium segment shown sides similar sine solution sphere spherical triangle square straight line surface taken tangent THEOREM third triangle triangle ABC unit vertex vertices volume whence