Plane and Solid Geometry

ABC and A'B'C acute angle altitude altitude h base bisects called central angle chord circle circumference circumscribed congruent construct Corollary corresponding cube cylinder diagonal diameter dihedral angle distance divided Draw drawn equilateral triangle EXERCISES face angles figure Find the area frustum Geometry given line given point HINT hypotenuse inches included angle interior angles intersection isosceles triangle lateral area lateral edges locus lune measured middle point number of sides Outline of Proof parallel lines parallelepiped parallelogram perimeter plane MN polygon ABCDE polyhedral angle polyhedron protractor prove quadrilateral radii radius ratio rectangle regular polygon regular polyhedron respectively rhombus right angles right triangle ruler and compasses secant segment side opposite slant height sphere spherical polygon spherical triangle straight line subtends surface tangent tetrahedron Theorem VII three sides trapezoid triangle ABC triangular prisms trihedral vertex vertices volume