Elements of Geometry: Including Plane, Solid, and Spherical Geometry

ABC and DEF ABCD altitude angles are equal arc AC bisector bisects centre chord circumference circumscribed coincide cone cylinder Dem.-Draw diagonals diameter dicular dihedral angle divided draw edges EFGH equal angles equally distant equiangular equiangular polygon exterior angles four right angles frustum given point Given-AB Given-The greater Hence homologous hypotenuse intersect isosceles triangle lateral area line joining lines drawn measured by arc middle point number of sides obtuse parallel lines parallelogram parallelopiped pendicular perimeter perpen plane MN polyhedral angle polyhedrons prism proportional Prove Prove-That pyramid Q. E. D. PROPOSITION quadrilateral radii radius ratio rectangle regular polygon regular polyhedrons rhombus right triangle SCHOLIUM segments similar slant height sphere spherical polygon spherical triangle surface tangent tetrahedrons THEOREM trapezoid triangle ABC triangles are equal unit of measure vertex vertical angle