The 2 dashes tell us the 2 side lengths are the same, The 3 dashes tell us each side is the same length, This is a quadrilateral, Adjacent angles on a straight line sum to 180, Vertically opposite angles are equal, Angles around a point sum to 360, Angles in a triangle sum to 180,

Geometry notations and angle facts

列印
嵌入

排行榜

視覺風格

選項

切換範本

恢復自動保存: ?