A Treatise on Special Or Elementary Geometry

ABCD adjacent altitude axis base and altitude bisect centre chord circle circumference coincide conceive construct convex cosine DEM.-If DEM.-Let diagonals diameter diedral distance divided draw drawn edges equal angles equally distant equiangular equilateral equivalent exterior angle facial angles figure frustum FUNCTIONS geometrical given line given point greater Hence homologous sides hypotenuse included angle inscribed intersect isosceles less let fall logarithm lune measured middle point number of sides oblique lines parallel parallelogram parallelopiped passing pendicular perpendicular plane triangle prism Prob produced PROP pyramid quadrant quadrilateral radii radius ratio rectangle regular polygon revolve right angled triangle secant secant line similar sine slant height solution sphere spherical angle spherical triangle square straight line SUG's surface symmetrical tang tangent Theorem.-The triangle ABC triedral trigonometrical trigonometrical functions vertex vertices whence