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4-sc-08-2 能利用直尺或三角板畫出正方形、長方形、平形四邊形與梯形

4-sc-08-2 能利用直尺或三角板畫出正方形、長方形、平形四邊形與梯形

Junyi Academy is derived originally from Khan Academy, and derived from Chengzhi Foundation.

More information about Chengzhi Foundation, you can find under: http://kistschool.org/.

More information about Khan Academy, you can find under: https://www.khanacademy.org/.

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