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證明三角形內角和180度
Author:
p0919311521
分年細目:5-s-01能透過操作,理解三角形內角和為180度 1.當∠B=90,∠C=30時,∠A=? 2.當∠B=45,∠C=45時,∠A=? 3.當∠B=50,∠C=50時,∠A=? 請移動A,B,C三點,依照上述題目,調整 ∠B與∠C的角度並記錄答案於學習單, 勾選下列方格,並操作滑桿,觀察解題過程.
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