Elementary Geometry

ABCD adjacent adjacent angles alternate exterior angles alternate interior altitude angle included angles are equal arc CB axis base and altitude bisect centre chord circle circumference coincide conceived construct COROLLARY diagonals diameter diedral direction distance draw drawn edges equal angles equally distant equilateral equivalent exterior angles facial angles frustum Geometry given angle given line given point given sides greater Hence inscribed inscribed angle intersect less Let ABC lune measured by arc middle point oblique lines opposite sides parallelogram pass pendicular perimeter perpen perpendicular prism Problem.-To PROPOSITION VII prove pyramid Q. E. D. PROPOSITION quadrilateral radii radius ratio rectangle regular polygon revolved right angles SCHOLIUM segment similar slant height solid sphere spherical angle spherical triangle square straight angle straight line supplement surface tangent theorem Theorem.-The transversal triedrals vertex vertices whence