# 三角形的建構

A unique triangle can be constructed given all three sides.

• 兩邊之和大於第三邊
The sum of any two sides (of a triangle) is greater than the third side.
• 兩邊之差小於第三邊
The difference of any two sides (of a triangle) is less than the third side.
此處的「差」是「差距」的意思，即「差的絕對值」： the absolute value of the difference。

 [語音講解：trig-construc.mp3]

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Created: July 20, 2022
Last Revised: 07/27, 11/14