片语
quadrantal spherical triangle[航]
side of spherical triangle[数]
oblique e spherical triangle斜角球面三角形
spherical tight triangle球面直角三角形
spherical l triangle球面三角形
astronomical spherical triangle天文球面三角形
scalene spherical triangle不规则球面三角形
roghtangled spherical triangle球面直角三角形