Plane and Solid Geometry

ABCD altitude approaches base bisector bisects called chord circle circular circumscribed coincide common cone congruent construct COROLLARY corresponding cylinder describe diagonal diameter difference dihedral angles distance divide draw drawn edges equal equidistant equilateral triangle equivalent EXERCISE external faces fall figure Find follows formed four frustum geometry given line given point greater half Hence included inscribed intersecting isosceles joining length less limit locus measured meet mid-point opposite parallel parallelepiped parallelogram passes perimeter perpendicular placed plane plane MN Post prism PROBLEM produced Proof proportional PROPOSITION prove pyramid quadrilateral radii radius ratio rectangle regular polygon respectively right angle right triangle segments sides similar sphere spherical square straight line Suppose surface tangent THEOREM third triangle triangle ABC vertex vertices volume