Triangle Angle Sum Theorem Tutorial
X を解いて三角形の角度を求めます
相似な三角形を使用して x の大きさを求める
三角形の欠けている辺の長さを計算する方法
Find the value of x in the figure – can you solve SIMILAR TRIANGLE problems?
三角不等式 x を解く
三角不等式定理 x の取り得る値
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