Bira (geometria)

Geometrian, bira angeluak neurtzeko unitatea da, 360°-ren edo 2π radianen baliokidea. Angelu handiak neurtzeko erabiltzen da.

Angelu arrunten konbertsioa

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

Kanpo estekak

• Datuak: Q304479