Gradu ehundar

Geometrian, gradu ehundarra angeluak neurtzeko unitatea da. Zirkunferentzia zatitzen den 400 zati berdinetako bakoitzari gradu ehundar bat dagokio. Sinboloa gon bada ere, goi-indize moduan idatzitako g ikurraz ere adierazi ohi da (adibidez, 35 gon edo 35^g). Gradu ehundar batek 100 minutu ehundar (100^c) ditu, eta minutu ehundar batek 100 segundo ehundar (100^cc) ditu^[1].

Unitateak	Balioak
Birak	0	${\displaystyle {\tfrac {\tau }{12}}}$	${\displaystyle {\tfrac {\tau }{8}}}$	${\displaystyle {\tfrac {\tau }{6}}}$	${\displaystyle {\tfrac {\tau }{4}}}$	${\displaystyle {\tfrac {\tau }{2}}}$	${\displaystyle {\tfrac {3}{4}}\tau }$	${\displaystyle 1\tau \,}$
Gradu hirurogeitarrak	0°	30°	45°	60°	90°	180°	270°	360°
Radianak	0	${\displaystyle {\tfrac {\pi }{6}}}$	${\displaystyle {\tfrac {\pi }{4}}}$	${\displaystyle {\tfrac {\pi }{3}}}$	${\displaystyle {\tfrac {\pi }{2}}}$	${\displaystyle \pi \,}$	${\displaystyle {\tfrac {3\pi }{2}}}$	${\displaystyle 2\pi \,}$
Gradu ehundarrak	0g	${\displaystyle {\tfrac {100^{g}}{3}}}$	50g	${\displaystyle {\tfrac {200^{g}}{3}}}$	100g	200g	300g	400g