[計數小問題]：三角形與正方形個數

[計數小問題]：三角形與正方形個數 Triangles and Squares

請問圖中共有幾個三角形呢？你能算出來嗎？

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How many triangles and squares are there in the below diagram? Can you count them?
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參考解答：120 個 / 31 個

題目來源： TI Education
圖片來源：TI Education (點擊圖片可連結原圖)