# Angular sizes

 Angular sizes   Size of a angle of a convergence, it is possible to measure in angular sizes degrees (degree) system of calculation (60) or (100) (see fig. 106).        Fig. of 106 Angular sizes    The degree (degree) a designation (°) size in terms of SI (π/180) is glad, angular minute (minute) a designation (′) size in terms of SI (1/60) ° = (π/10800), angular second (second) a designation (″) size in terms of SI (1/60) ′ = (π/648000).    Sexagesimal a notation (60) - an item notation on the integer basis 60. A measures of angles degree (deg) 1/360 circles, minute (arcmin) 1/60 degrees (deg), second (arcsec) 1/60 minutes (arcmin.) 1 degree (deg) (1 °), is equal 60 minutes (arcmin) (60 '), is equal 3600 seconds (arcsec) (3600 ").    The whole size of a angle of one degree (deg), 60 ' minutes (arcmin), 3600 " seconds (arcsec), looks so 1°00 '. The size of a angle of half of degree ½ (deg), 30 ' minutes (arcmin), 1800 " seconds (arcsec), looks so 0°30 '.    Decimal a notation (100) - an item notation on the integer basis 100. A measures of angles degree (deg) 1/360 circles, minute (arcmin) 1/100 100-th shares of degree (deg), second (arcsec) 1/100 minutes (arcmin.) 1 degree (deg) (1,0 °), is equal 100 minutes (arcmin) (100 '), is equal 10000 seconds (arcsec) (10000 ").    The whole size of a angle of one degree (deg), 100 minutes (arcmin), 10000 seconds (arcsec), looks so 1,00 °. The size of a angle of half of degree ½ (deg), 50 minutes (arcmin), looks so 0,50 °.