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what does ~ mean in geometry when referring to triangles?

 May 23, 2019

Best Answer 

 #1
avatar+8966 
+3

△ABC ~ △DEF   means   "triangle ABC is similar to triangle DEF."

 

If you take a triangle and multiply each of its sides by some number, you will get a similar triangle.

 

For example:

 

If you take  △ABC  and multiply each of its sides by 2, you will get  △DEF.  So  △ABC ~ △DEF

 

( Also note that the order of the letters in the triangle name matters.

  For example, in this case it is NOT true that  △ABC ~ △FDE )

 May 23, 2019
 #1
avatar+8966 
+3
Best Answer

△ABC ~ △DEF   means   "triangle ABC is similar to triangle DEF."

 

If you take a triangle and multiply each of its sides by some number, you will get a similar triangle.

 

For example:

 

If you take  △ABC  and multiply each of its sides by 2, you will get  △DEF.  So  △ABC ~ △DEF

 

( Also note that the order of the letters in the triangle name matters.

  For example, in this case it is NOT true that  △ABC ~ △FDE )

hectictar May 23, 2019
 #2
avatar+280 
+1

thanks!

 May 28, 2019

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