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F1 triangle angle sum
Auteur:
Ngan Hok Hei
通過移動三角形的頂點﹐同學可以發現 不論是鈍角三角形﹐銳角三角形還是任何類形三角形, 三角形的內角總和仍然是180度。
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רישום חופשי
Converting Angle Measures Between Degrees and Radians
Dividing a 2-digit number by a 1-digit number (1)
Dividing a 2-digit number by a 1-digit number (2)
Ontdek materiaal
Sections of Rectangular Pyramids
Theorem 4.14
uppg4.2
Perpindicular Bisectors
Going with the Flow
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