Plane and Solid Geometry

AABC ABCD altitude angles are equal axis bisects called central angle chord circumscribed congruent Construct COROLLARY cube determine diagonals diameter dihedral angle distance divided Draw drawn equilateral triangle EXERCISES exterior angles face angles figure Find the area formed frustum given circle given line given point Given the triangle Hence hypotenuse isosceles triangle joining lateral area lateral edges legs length line-segment locus measured mid-point number of sides parallel lines parallelepiped parallelogram passes perimeter perpendicular bisector plane geometry polyhedral angle polyhedron prism prismatoid projection Proof PROPOSITION prove pyramid quadrilateral radii radius ratio rays rectangle regular polygons respectively rhombus right angle right triangle segment semicircle Show similar slant height solid sphere spherical polygon spherical triangle square straight line surface symmetric tangent tetrahedron THEOREM trapezoid triangle ABC trihedral vertex angle vertices volume