WordمثلثMeaningtrianglePart of speechnounPronunciationCourseArabic (Modern Standard)LessonBasic GeometryUsages of مثلثلا أحد رأى المثلث الأزرق.lâ ahada ra'â al-muthallatha al-azraqaNo one saw the blue triangle.اللافتة مثلث صغير.al-lâfitatu muthallathun saghîrunThe sign is a small triangle.