perpendicularKK [ˏpɝpənˋdɪkjəlɚ] /ˌpɝpənˈdɪkjəlɚ/發音形容詞1垂直的、成直角的Draw a line perpendicular to the base of the triangle.畫一條與三角形底邊垂直的線。2直立的、筆直的The wall must stay perpendicular, or the whole structure will lean.牆面必須保持直立,否則整棟建物會傾斜。3陡峭的、險峻的Climbers roped up before tackling the almost perpendicular cliff.攀登者在挑戰那面近乎陡直的崖壁前先繫上繩索。名詞1垂直線、垂線The teacher asked us to drop a perpendicular from the top vertex.老師要我們從頂點作一條垂線。2垂直位置、直立狀態The old tower is several degrees out of the perpendicular.那座舊塔已偏離垂直方向好幾度。