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英语翻译The pegs on a 3-by-3 geoboard are spaced 5cm apart.ketch

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英语翻译
The pegs on a 3-by-3 geoboard are spaced 5cm apart.ketch all the different right triangles that can be made on it,and calculate the length of each side,to the nearest tenth of a centimetre.
thank you very much~
英语翻译The pegs on a 3-by-3 geoboard are spaced 5cm apart.ketch
ketch打错了,应该是sketch--画出草图
意思是：在带3×3个凸起点的板上,各凸起点间隔5厘米,画（勾勒）出所有能画出的直角三角形,并计算出各边长,精确到0.1厘米.
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