勾股定理計算器
求直角三角形缺失的邊。
在您的瀏覽器中執行。您的檔案不會離開裝置。 瞭解如何驗證
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使用方法
- 1填寫各項
輸入數字或選擇所需選項。
- 2檢視結果
更改任何值時，答案會立即更新。
- 3使用結果
複製結果或記下來。不會向任何地方傳送任何內容。
About this tool
Choose to find the hypotenuse (c) from the two legs, or a leg from the hypotenuse and the other leg. The calculator applies a² + b² = c² and also gives the area, the perimeter and the two acute angles.
When to use it
Find the missing side of a right triangle.
Tips
The hypotenuse is the longest side opposite the right angle.
Privacy
Everything runs in your browser, so your data is not uploaded or stored.
Common triples
3, 4, 5 and 5, 12, 13 and 8, 15, 17 are whole-number right triangles. Builders use 3, 4, 5 to check that a corner is square.
計算示例
With the boxes at their starting values (Find: The hypotenuse c; Side a: 3; Side b: 4; Hypotenuse c: 5), the tool shows: Side a: 3; Side b: 4; Area: 6; Perimeter: 12; Angle A: 36.87°; Angle B: 53.13°; Hypotenuse c: 5. Change any box to see your own numbers. The result updates as you type, and nothing leaves your browser.
獲得最佳結果的提示
在相信結果之前先檢查每一個輸入項，因為一個錯誤的數字就會改變整個答案。請使用工資單、賬單、證書或合同上的準確數字，並記下計算日期。稅率、門檻和規則會不時變化，因此對於稅費和法律事務，請將結果視為估算，並與本頁註明的官方來源核對。您可以嘗試任意多個方案；不會儲存或傳送任何內容，重新整理頁面會清空輸入。
要點
- 分類: 日常工具
- 在瀏覽器中執行，無需註冊，無需上傳。
- 您輸入的資訊保留在裝置上。
- 提供多種語言。
- 內容最後稽核日期:
常見問題
What is the Pythagorean theorem?
In a right triangle, the square of the longest side (hypotenuse) equals the sum of the squares of the other two sides.
Can I find a leg?
Yes. Choose “Find a side” and enter the hypotenuse and the other leg.
What is the formula?
a² + b² = c².
Does it work for any triangle?
Only for right triangles.
Can I find a leg if I know the hypotenuse?
Yes. Enter the hypotenuse and the other leg and the tool finds the missing side.