45°= _________直角=__________平角=_________周角五分之三直角=__________.
问题描述:
45°= _________直角=__________平角=_________周角五分之三直角=__________.
答
45°= ___1/2______直角=______1/4____平角=___1/8______周角
五分之三直角=54°