Angles are all around us, in structures such as pylons, in the hands of a clock, or behind the windshield wipers of a car. What if we used angles to make pylons more pleasing to the eye? Let's work on angles!
多媒體：
多媒體
互動練習
版面：
固定
插圖：
許多
關鍵字詞： Mathematics | geometry | angles | comparing angles | right angle | acute angle | obtuse angle, straight angle