Common terms and phrases
94 days ABCD accurately observed angle ADB angle EHF angle FHG angle HDL apogee apparent arc apparent irregularity arc GF arc HG calculated chord circle ABC homocentric circle circumscribed death of Alexander DH's diameter ADC difference of irregularity eccentric circle ecliptic with center Egyptian-fashion Thoth epicycle EFG epoch equatorial hours equinoxial points Euktemon fall equinox fixed stars given Eucl greater than angle greatest difference heavens Hipparchus homocentric circle hypotenuse hypothesis of eccentricity intercalated days interval length likewise line DK mean course mean movement mean passage meridian midday midnight motion Nabonassar perigee perpendicular planets quadrant quarter-day addition allows radius ratio of DH regular and irregular regular movement regular quarter-day addition revolution right triangle semicircle solar days spring equinox Stachys star moves straight line subtract summer tropic sun's irregularity third Calippic period Translator's Note tropic recorded tropics and equinoxes