set-square angle, point of view triangle 
Dreieck (zum Zeichnen von rechten Winkeln) Winkel Dreiecke 
triangolo (per disegnare angoli retti) Angoli triangoli 
triangle (pour dessiner des angles droits) angles triangles 
triángulo (para dibujar ángulos rectos) ángulos triángulos set-square 64 三角板 [-] sānjiǎobǎn (triangle-board) set-square: 一块 ~ a set-square1 电脑 [電腦] diànnǎo (electronic-brain) computer, laptop: 一台 ~ a computer || 开/关~ turn on/ shut down computer || 笔记本~ laptop ' angle, point of view 56 角度 [-] jiǎodù (angle-degree) angle, point of view: 从这个~看 seen from this angle || 不同的~ different angles ' triangle 14 三角形 [-] sānjiǎoxíng (three-angle-shape) triangle: 直角~ right triangle || 等边~ equilateral triangle || 倒 ~ inverted triangle '
Một hình vuông có bốn góc bằng nhau. 
A square has four equal angles.
Ein Quadrat hat vier gleiche Winkel.
สี่เหลี่ยมมีสี่มุมเท่ากัน
一个正方形有四个相等的角度。