Hyperbolic geometry or hypercycle, then the triangle has no circumscribed circle. As in spherical and elliptical geometry, in hyperbolic geometry if two triangles are similar, they must be congruent. A special polygon in hyperbolic geometry is the regular apeirogon, a uniform polygon with an infinite number of sides. In Euclidean geometry, the only way to construct such a polygon is to make the side lengths tend to zero and the apeirogon is indistinguishable from a circle, or make the interior angles tend to 180 degrees and the apeirogon approaches a straight line. However, in hyperbolic geometry, a regular apeirogon has sides of
OMB Circular A-130 the system to have National security emergency preparedness guidelines that conform to Executive Order 12472. OMB Circular A-130 OMB Circular A-130, titled Management of Federal Information Resources, is one of many Government circulars produced by the United States Federal Government to establish policy for executive branch departments and agencies. Circular A-130 was first issued in December 1985 to meet information resource management requirements that were included in the Paperwork Reduction Act (PRA) of 1980. Specifically, the PRA assigned responsibility to the OMB Director to develop and maintain a comprehensive set of information resources management policies for use across the Federal