acute angle锐角
acute triangle锐角三角形
adjacent angle邻角
alternate angle错角
alternate exterior angle外错角
alternate interior angle内错角
altitude顶垂线
angle of a circumference圆周角
angular bisector角等分线
arc弧
arc cosine反余弦
arc sine反正弦
arc tangent反正切
axis of symmetry对称轴
base底线
broken line折线
center of a circle圆心
center of figure垂心、形心
central angle圆心角
central symmetry中心对称
centroid垂心、形心
chord弦
circle圆
circular conical surface圆锥面
circular measure弧度制
circumcircle外接圆
circumference圆周
circumscribed circle外接圆
common tangent公切线
complementary angle余角
concave polygon凹多边形
concave polyhedron凹多面体
concentric circles同心圆
cone圆锥
convex polygon凸多边形
convex polyhedron凸多面体
corresponding angle同位角
cosecant余割
cosine余弦
cotangent余切
coversine余矢
cross section截面
cuboid长方体
curved surface曲面
cylinder圆柱体
cylindrical surface圆柱面