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Euclid's Elements - Book III, Proposition 19
Author:
mtpberg
Topic:
Circle
A line drawn perpendicular to a tangent line at the point of tangency will pass through the center of the circle.
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拼砌四邊形 - 工作紙
အခြေခံ data အခေါ်အဝေါ်များ
גיליון אלקטרוני להעלאת נתוני בעיה ויצירת גרף בהתאם
Forming Similar Triangles
判斷錐體
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Page169_Q4
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